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Comparing libev/ev.c (file contents):
Revision 1.250 by root, Thu May 22 02:44:57 2008 UTC vs.
Revision 1.380 by root, Mon Jun 27 19:20:01 2011 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
51 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME
58# define EV_USE_REALTIME 0
59# endif
60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1
62# endif
63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL)
65# define EV_USE_CLOCK_SYSCALL 0
66# endif
67
52# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 70# define EV_USE_MONOTONIC 1
55# endif 71# endif
56# ifndef EV_USE_REALTIME 72# ifndef EV_USE_REALTIME
57# define EV_USE_REALTIME 1 73# define EV_USE_REALTIME 0
58# endif 74# endif
59# else 75# else
60# ifndef EV_USE_MONOTONIC 76# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 0 77# define EV_USE_MONOTONIC 0
62# endif 78# endif
63# ifndef EV_USE_REALTIME 79# ifndef EV_USE_REALTIME
64# define EV_USE_REALTIME 0 80# define EV_USE_REALTIME 0
65# endif 81# endif
66# endif 82# endif
67 83
84# if HAVE_NANOSLEEP
68# ifndef EV_USE_NANOSLEEP 85# ifndef EV_USE_NANOSLEEP
69# if HAVE_NANOSLEEP
70# define EV_USE_NANOSLEEP 1 86# define EV_USE_NANOSLEEP EV_FEATURE_OS
87# endif
71# else 88# else
89# undef EV_USE_NANOSLEEP
72# define EV_USE_NANOSLEEP 0 90# define EV_USE_NANOSLEEP 0
91# endif
92
93# if HAVE_SELECT && HAVE_SYS_SELECT_H
94# ifndef EV_USE_SELECT
95# define EV_USE_SELECT EV_FEATURE_BACKENDS
73# endif 96# endif
97# else
98# undef EV_USE_SELECT
99# define EV_USE_SELECT 0
74# endif 100# endif
75 101
102# if HAVE_POLL && HAVE_POLL_H
76# ifndef EV_USE_SELECT 103# ifndef EV_USE_POLL
77# if HAVE_SELECT && HAVE_SYS_SELECT_H 104# define EV_USE_POLL EV_FEATURE_BACKENDS
78# define EV_USE_SELECT 1
79# else
80# define EV_USE_SELECT 0
81# endif 105# endif
82# endif
83
84# ifndef EV_USE_POLL
85# if HAVE_POLL && HAVE_POLL_H
86# define EV_USE_POLL 1
87# else 106# else
107# undef EV_USE_POLL
88# define EV_USE_POLL 0 108# define EV_USE_POLL 0
89# endif
90# endif 109# endif
91 110
92# ifndef EV_USE_EPOLL
93# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H 111# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94# define EV_USE_EPOLL 1 112# ifndef EV_USE_EPOLL
95# else 113# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96# define EV_USE_EPOLL 0
97# endif 114# endif
115# else
116# undef EV_USE_EPOLL
117# define EV_USE_EPOLL 0
98# endif 118# endif
99 119
120# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100# ifndef EV_USE_KQUEUE 121# ifndef EV_USE_KQUEUE
101# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H 122# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102# define EV_USE_KQUEUE 1
103# else
104# define EV_USE_KQUEUE 0
105# endif 123# endif
124# else
125# undef EV_USE_KQUEUE
126# define EV_USE_KQUEUE 0
106# endif 127# endif
107 128
108# ifndef EV_USE_PORT
109# if HAVE_PORT_H && HAVE_PORT_CREATE 129# if HAVE_PORT_H && HAVE_PORT_CREATE
110# define EV_USE_PORT 1 130# ifndef EV_USE_PORT
111# else 131# define EV_USE_PORT EV_FEATURE_BACKENDS
112# define EV_USE_PORT 0
113# endif 132# endif
133# else
134# undef EV_USE_PORT
135# define EV_USE_PORT 0
114# endif 136# endif
115 137
116# ifndef EV_USE_INOTIFY
117# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H 138# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118# define EV_USE_INOTIFY 1 139# ifndef EV_USE_INOTIFY
119# else
120# define EV_USE_INOTIFY 0 140# define EV_USE_INOTIFY EV_FEATURE_OS
121# endif 141# endif
142# else
143# undef EV_USE_INOTIFY
144# define EV_USE_INOTIFY 0
122# endif 145# endif
123 146
147# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124# ifndef EV_USE_EVENTFD 148# ifndef EV_USE_SIGNALFD
125# if HAVE_EVENTFD 149# define EV_USE_SIGNALFD EV_FEATURE_OS
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif 150# endif
151# else
152# undef EV_USE_SIGNALFD
153# define EV_USE_SIGNALFD 0
154# endif
155
156# if HAVE_EVENTFD
157# ifndef EV_USE_EVENTFD
158# define EV_USE_EVENTFD EV_FEATURE_OS
159# endif
160# else
161# undef EV_USE_EVENTFD
162# define EV_USE_EVENTFD 0
130# endif 163# endif
131 164
132#endif 165#endif
133 166
134#include <math.h>
135#include <stdlib.h> 167#include <stdlib.h>
168#include <string.h>
136#include <fcntl.h> 169#include <fcntl.h>
137#include <stddef.h> 170#include <stddef.h>
138 171
139#include <stdio.h> 172#include <stdio.h>
140 173
141#include <assert.h> 174#include <assert.h>
142#include <errno.h> 175#include <errno.h>
143#include <sys/types.h> 176#include <sys/types.h>
144#include <time.h> 177#include <time.h>
178#include <limits.h>
145 179
146#include <signal.h> 180#include <signal.h>
147 181
148#ifdef EV_H 182#ifdef EV_H
149# include EV_H 183# include EV_H
150#else 184#else
151# include "ev.h" 185# include "ev.h"
152#endif 186#endif
187
188EV_CPP(extern "C" {)
153 189
154#ifndef _WIN32 190#ifndef _WIN32
155# include <sys/time.h> 191# include <sys/time.h>
156# include <sys/wait.h> 192# include <sys/wait.h>
157# include <unistd.h> 193# include <unistd.h>
158#else 194#else
195# include <io.h>
159# define WIN32_LEAN_AND_MEAN 196# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 197# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 198# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 199# define EV_SELECT_IS_WINSOCKET 1
163# endif 200# endif
201# undef EV_AVOID_STDIO
164#endif 202#endif
203
204/* OS X, in its infinite idiocy, actually HARDCODES
205 * a limit of 1024 into their select. Where people have brains,
206 * OS X engineers apparently have a vacuum. Or maybe they were
207 * ordered to have a vacuum, or they do anything for money.
208 * This might help. Or not.
209 */
210#define _DARWIN_UNLIMITED_SELECT 1
165 211
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 212/* this block tries to deduce configuration from header-defined symbols and defaults */
167 213
214/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG)
216/* use what's provided */
217#elif defined (NSIG)
218# define EV_NSIG (NSIG)
219#elif defined(_NSIG)
220# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX)
222# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX)
224# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX)
226# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG)
228# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG)
230# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE)
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig)
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else
236# error "unable to find value for NSIG, please report"
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif
241
242#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0
244#endif
245
246#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else
250# define EV_USE_CLOCK_SYSCALL 0
251# endif
252#endif
253
168#ifndef EV_USE_MONOTONIC 254#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else
169# define EV_USE_MONOTONIC 0 258# define EV_USE_MONOTONIC 0
259# endif
170#endif 260#endif
171 261
172#ifndef EV_USE_REALTIME 262#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 263# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174#endif 264#endif
175 265
176#ifndef EV_USE_NANOSLEEP 266#ifndef EV_USE_NANOSLEEP
267# if _POSIX_C_SOURCE >= 199309L
268# define EV_USE_NANOSLEEP EV_FEATURE_OS
269# else
177# define EV_USE_NANOSLEEP 0 270# define EV_USE_NANOSLEEP 0
271# endif
178#endif 272#endif
179 273
180#ifndef EV_USE_SELECT 274#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 275# define EV_USE_SELECT EV_FEATURE_BACKENDS
182#endif 276#endif
183 277
184#ifndef EV_USE_POLL 278#ifndef EV_USE_POLL
185# ifdef _WIN32 279# ifdef _WIN32
186# define EV_USE_POLL 0 280# define EV_USE_POLL 0
187# else 281# else
188# define EV_USE_POLL 1 282# define EV_USE_POLL EV_FEATURE_BACKENDS
189# endif 283# endif
190#endif 284#endif
191 285
192#ifndef EV_USE_EPOLL 286#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 287# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1 288# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195# else 289# else
196# define EV_USE_EPOLL 0 290# define EV_USE_EPOLL 0
197# endif 291# endif
198#endif 292#endif
199 293
… …
205# define EV_USE_PORT 0 299# define EV_USE_PORT 0
206#endif 300#endif
207 301
208#ifndef EV_USE_INOTIFY 302#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) 303# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1 304# define EV_USE_INOTIFY EV_FEATURE_OS
211# else 305# else
212# define EV_USE_INOTIFY 0 306# define EV_USE_INOTIFY 0
213# endif 307# endif
214#endif 308#endif
215 309
216#ifndef EV_PID_HASHSIZE 310#ifndef EV_PID_HASHSIZE
217# if EV_MINIMAL 311# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218# define EV_PID_HASHSIZE 1
219# else
220# define EV_PID_HASHSIZE 16
221# endif
222#endif 312#endif
223 313
224#ifndef EV_INOTIFY_HASHSIZE 314#ifndef EV_INOTIFY_HASHSIZE
225# if EV_MINIMAL 315# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226# define EV_INOTIFY_HASHSIZE 1
227# else
228# define EV_INOTIFY_HASHSIZE 16
229# endif
230#endif 316#endif
231 317
232#ifndef EV_USE_EVENTFD 318#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) 319# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1 320# define EV_USE_EVENTFD EV_FEATURE_OS
235# else 321# else
236# define EV_USE_EVENTFD 0 322# define EV_USE_EVENTFD 0
323# endif
324#endif
325
326#ifndef EV_USE_SIGNALFD
327# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
328# define EV_USE_SIGNALFD EV_FEATURE_OS
329# else
330# define EV_USE_SIGNALFD 0
237# endif 331# endif
238#endif 332#endif
239 333
240#if 0 /* debugging */ 334#if 0 /* debugging */
241# define EV_VERIFY 3 335# define EV_VERIFY 3
242# define EV_USE_4HEAP 1 336# define EV_USE_4HEAP 1
243# define EV_HEAP_CACHE_AT 1 337# define EV_HEAP_CACHE_AT 1
244#endif 338#endif
245 339
246#ifndef EV_VERIFY 340#ifndef EV_VERIFY
247# define EV_VERIFY !EV_MINIMAL 341# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
248#endif 342#endif
249 343
250#ifndef EV_USE_4HEAP 344#ifndef EV_USE_4HEAP
251# define EV_USE_4HEAP !EV_MINIMAL 345# define EV_USE_4HEAP EV_FEATURE_DATA
252#endif 346#endif
253 347
254#ifndef EV_HEAP_CACHE_AT 348#ifndef EV_HEAP_CACHE_AT
255# define EV_HEAP_CACHE_AT !EV_MINIMAL 349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif
351
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h>
356# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1
360# else
361# undef EV_USE_CLOCK_SYSCALL
362# define EV_USE_CLOCK_SYSCALL 0
363# endif
256#endif 364#endif
257 365
258/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 366/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
259 373
260#ifndef CLOCK_MONOTONIC 374#ifndef CLOCK_MONOTONIC
261# undef EV_USE_MONOTONIC 375# undef EV_USE_MONOTONIC
262# define EV_USE_MONOTONIC 0 376# define EV_USE_MONOTONIC 0
263#endif 377#endif
… …
271# undef EV_USE_INOTIFY 385# undef EV_USE_INOTIFY
272# define EV_USE_INOTIFY 0 386# define EV_USE_INOTIFY 0
273#endif 387#endif
274 388
275#if !EV_USE_NANOSLEEP 389#if !EV_USE_NANOSLEEP
276# ifndef _WIN32 390/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux)
277# include <sys/select.h> 392# include <sys/select.h>
278# endif 393# endif
279#endif 394#endif
280 395
281#if EV_USE_INOTIFY 396#if EV_USE_INOTIFY
397# include <sys/statfs.h>
282# include <sys/inotify.h> 398# include <sys/inotify.h>
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0
403# endif
283#endif 404#endif
284 405
285#if EV_SELECT_IS_WINSOCKET 406#if EV_SELECT_IS_WINSOCKET
286# include <winsock.h> 407# include <winsock.h>
287#endif 408#endif
288 409
289#if EV_USE_EVENTFD 410#if EV_USE_EVENTFD
290/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
291# include <stdint.h> 412# include <stdint.h>
292# ifdef __cplusplus 413# ifndef EFD_NONBLOCK
293extern "C" { 414# define EFD_NONBLOCK O_NONBLOCK
294# endif 415# endif
295int eventfd (unsigned int initval, int flags); 416# ifndef EFD_CLOEXEC
296# ifdef __cplusplus 417# ifdef O_CLOEXEC
297} 418# define EFD_CLOEXEC O_CLOEXEC
419# else
420# define EFD_CLOEXEC 02000000
421# endif
298# endif 422# endif
423EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
424#endif
425
426#if EV_USE_SIGNALFD
427/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
428# include <stdint.h>
429# ifndef SFD_NONBLOCK
430# define SFD_NONBLOCK O_NONBLOCK
431# endif
432# ifndef SFD_CLOEXEC
433# ifdef O_CLOEXEC
434# define SFD_CLOEXEC O_CLOEXEC
435# else
436# define SFD_CLOEXEC 02000000
437# endif
438# endif
439EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
440
441struct signalfd_siginfo
442{
443 uint32_t ssi_signo;
444 char pad[128 - sizeof (uint32_t)];
445};
299#endif 446#endif
300 447
301/**/ 448/**/
302 449
303#if EV_VERIFY >= 3 450#if EV_VERIFY >= 3
304# define EV_FREQUENT_CHECK ev_loop_verify (EV_A) 451# define EV_FREQUENT_CHECK ev_verify (EV_A)
305#else 452#else
306# define EV_FREQUENT_CHECK do { } while (0) 453# define EV_FREQUENT_CHECK do { } while (0)
307#endif 454#endif
308 455
309/* 456/*
310 * This is used to avoid floating point rounding problems. 457 * This is used to work around floating point rounding problems.
311 * It is added to ev_rt_now when scheduling periodics
312 * to ensure progress, time-wise, even when rounding
313 * errors are against us.
314 * This value is good at least till the year 4000. 458 * This value is good at least till the year 4000.
315 * Better solutions welcome.
316 */ 459 */
317#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 460#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
461/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
318 462
319#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 463#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
320#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
321/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
322 465
323#if __GNUC__ >= 4 466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
324# define expect(expr,value) __builtin_expect ((expr),(value)) 467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
325# define noinline __attribute__ ((noinline)) 468
469/* the following are taken from libecb */
470/* ecb.h start */
471
472/* many compilers define _GNUC_ to some versions but then only implement
473 * what their idiot authors think are the "more important" extensions,
474 * causing enourmous grief in return for some better fake benchmark numbers.
475 * or so.
476 * we try to detect these and simply assume they are not gcc - if they have
477 * an issue with that they should have done it right in the first place.
478 */
479#ifndef ECB_GCC_VERSION
480 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
481 #define ECB_GCC_VERSION(major,minor) 0
482 #else
483 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484 #endif
485#endif
486
487#if __cplusplus
488 #define ecb_inline static inline
489#elif ECB_GCC_VERSION(2,5)
490 #define ecb_inline static __inline__
491#elif ECB_C99
492 #define ecb_inline static inline
326#else 493#else
327# define expect(expr,value) (expr) 494 #define ecb_inline static
328# define noinline
329# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
330# define inline
331# endif 495#endif
332#endif
333 496
497#if ECB_GCC_VERSION(3,1)
498 #define ecb_attribute(attrlist) __attribute__(attrlist)
499 #define ecb_is_constant(expr) __builtin_constant_p (expr)
500 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
501 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
502#else
503 #define ecb_attribute(attrlist)
504 #define ecb_is_constant(expr) 0
505 #define ecb_expect(expr,value) (expr)
506 #define ecb_prefetch(addr,rw,locality)
507#endif
508
509#define ecb_noinline ecb_attribute ((__noinline__))
510#define ecb_noreturn ecb_attribute ((__noreturn__))
511#define ecb_unused ecb_attribute ((__unused__))
512#define ecb_const ecb_attribute ((__const__))
513#define ecb_pure ecb_attribute ((__pure__))
514
515#if ECB_GCC_VERSION(4,3)
516 #define ecb_artificial ecb_attribute ((__artificial__))
517 #define ecb_hot ecb_attribute ((__hot__))
518 #define ecb_cold ecb_attribute ((__cold__))
519#else
520 #define ecb_artificial
521 #define ecb_hot
522 #define ecb_cold
523#endif
524
525/* put around conditional expressions if you are very sure that the */
526/* expression is mostly true or mostly false. note that these return */
527/* booleans, not the expression. */
334#define expect_false(expr) expect ((expr) != 0, 0) 528#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
335#define expect_true(expr) expect ((expr) != 0, 1) 529#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530/* ecb.h end */
531
532#define expect_false(cond) ecb_expect_false (cond)
533#define expect_true(cond) ecb_expect_true (cond)
534#define noinline ecb_noinline
535
336#define inline_size static inline 536#define inline_size ecb_inline
337 537
338#if EV_MINIMAL 538#if EV_FEATURE_CODE
539# define inline_speed ecb_inline
540#else
339# define inline_speed static noinline 541# define inline_speed static noinline
542#endif
543
544#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
545
546#if EV_MINPRI == EV_MAXPRI
547# define ABSPRI(w) (((W)w), 0)
340#else 548#else
341# define inline_speed static inline
342#endif
343
344#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
345#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 549# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
550#endif
346 551
347#define EMPTY /* required for microsofts broken pseudo-c compiler */ 552#define EMPTY /* required for microsofts broken pseudo-c compiler */
348#define EMPTY2(a,b) /* used to suppress some warnings */ 553#define EMPTY2(a,b) /* used to suppress some warnings */
349 554
350typedef ev_watcher *W; 555typedef ev_watcher *W;
… …
352typedef ev_watcher_time *WT; 557typedef ev_watcher_time *WT;
353 558
354#define ev_active(w) ((W)(w))->active 559#define ev_active(w) ((W)(w))->active
355#define ev_at(w) ((WT)(w))->at 560#define ev_at(w) ((WT)(w))->at
356 561
562#if EV_USE_REALTIME
563/* sig_atomic_t is used to avoid per-thread variables or locking but still */
564/* giving it a reasonably high chance of working on typical architectures */
565static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
566#endif
567
357#if EV_USE_MONOTONIC 568#if EV_USE_MONOTONIC
358/* sig_atomic_t is used to avoid per-thread variables or locking but still */
359/* giving it a reasonably high chance of working on typical architetcures */
360static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 569static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
570#endif
571
572#ifndef EV_FD_TO_WIN32_HANDLE
573# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
574#endif
575#ifndef EV_WIN32_HANDLE_TO_FD
576# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
577#endif
578#ifndef EV_WIN32_CLOSE_FD
579# define EV_WIN32_CLOSE_FD(fd) close (fd)
361#endif 580#endif
362 581
363#ifdef _WIN32 582#ifdef _WIN32
364# include "ev_win32.c" 583# include "ev_win32.c"
365#endif 584#endif
366 585
367/*****************************************************************************/ 586/*****************************************************************************/
368 587
588/* define a suitable floor function (only used by periodics atm) */
589
590#if EV_USE_FLOOR
591# include <math.h>
592# define ev_floor(v) floor (v)
593#else
594
595#include <float.h>
596
597/* a floor() replacement function, should be independent of ev_tstamp type */
598static ev_tstamp noinline
599ev_floor (ev_tstamp v)
600{
601 /* the choice of shift factor is not terribly important */
602#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
603 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
604#else
605 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
606#endif
607
608 /* argument too large for an unsigned long? */
609 if (expect_false (v >= shift))
610 {
611 ev_tstamp f;
612
613 if (v == v - 1.)
614 return v; /* very large number */
615
616 f = shift * ev_floor (v * (1. / shift));
617 return f + ev_floor (v - f);
618 }
619
620 /* special treatment for negative args? */
621 if (expect_false (v < 0.))
622 {
623 ev_tstamp f = -ev_floor (-v);
624
625 return f - (f == v ? 0 : 1);
626 }
627
628 /* fits into an unsigned long */
629 return (unsigned long)v;
630}
631
632#endif
633
634/*****************************************************************************/
635
636#ifdef __linux
637# include <sys/utsname.h>
638#endif
639
640static unsigned int noinline ecb_cold
641ev_linux_version (void)
642{
643#ifdef __linux
644 unsigned int v = 0;
645 struct utsname buf;
646 int i;
647 char *p = buf.release;
648
649 if (uname (&buf))
650 return 0;
651
652 for (i = 3+1; --i; )
653 {
654 unsigned int c = 0;
655
656 for (;;)
657 {
658 if (*p >= '0' && *p <= '9')
659 c = c * 10 + *p++ - '0';
660 else
661 {
662 p += *p == '.';
663 break;
664 }
665 }
666
667 v = (v << 8) | c;
668 }
669
670 return v;
671#else
672 return 0;
673#endif
674}
675
676/*****************************************************************************/
677
678#if EV_AVOID_STDIO
679static void noinline ecb_cold
680ev_printerr (const char *msg)
681{
682 write (STDERR_FILENO, msg, strlen (msg));
683}
684#endif
685
369static void (*syserr_cb)(const char *msg); 686static void (*syserr_cb)(const char *msg);
370 687
371void 688void ecb_cold
372ev_set_syserr_cb (void (*cb)(const char *msg)) 689ev_set_syserr_cb (void (*cb)(const char *msg))
373{ 690{
374 syserr_cb = cb; 691 syserr_cb = cb;
375} 692}
376 693
377static void noinline 694static void noinline ecb_cold
378syserr (const char *msg) 695ev_syserr (const char *msg)
379{ 696{
380 if (!msg) 697 if (!msg)
381 msg = "(libev) system error"; 698 msg = "(libev) system error";
382 699
383 if (syserr_cb) 700 if (syserr_cb)
384 syserr_cb (msg); 701 syserr_cb (msg);
385 else 702 else
386 { 703 {
704#if EV_AVOID_STDIO
705 ev_printerr (msg);
706 ev_printerr (": ");
707 ev_printerr (strerror (errno));
708 ev_printerr ("\n");
709#else
387 perror (msg); 710 perror (msg);
711#endif
388 abort (); 712 abort ();
389 } 713 }
390} 714}
391 715
392static void * 716static void *
393ev_realloc_emul (void *ptr, long size) 717ev_realloc_emul (void *ptr, long size)
394{ 718{
719#if __GLIBC__
720 return realloc (ptr, size);
721#else
395 /* some systems, notably openbsd and darwin, fail to properly 722 /* some systems, notably openbsd and darwin, fail to properly
396 * implement realloc (x, 0) (as required by both ansi c-98 and 723 * implement realloc (x, 0) (as required by both ansi c-89 and
397 * the single unix specification, so work around them here. 724 * the single unix specification, so work around them here.
398 */ 725 */
399 726
400 if (size) 727 if (size)
401 return realloc (ptr, size); 728 return realloc (ptr, size);
402 729
403 free (ptr); 730 free (ptr);
404 return 0; 731 return 0;
732#endif
405} 733}
406 734
407static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 735static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
408 736
409void 737void ecb_cold
410ev_set_allocator (void *(*cb)(void *ptr, long size)) 738ev_set_allocator (void *(*cb)(void *ptr, long size))
411{ 739{
412 alloc = cb; 740 alloc = cb;
413} 741}
414 742
… …
417{ 745{
418 ptr = alloc (ptr, size); 746 ptr = alloc (ptr, size);
419 747
420 if (!ptr && size) 748 if (!ptr && size)
421 { 749 {
750#if EV_AVOID_STDIO
751 ev_printerr ("(libev) memory allocation failed, aborting.\n");
752#else
422 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 753 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
754#endif
423 abort (); 755 abort ();
424 } 756 }
425 757
426 return ptr; 758 return ptr;
427} 759}
… …
429#define ev_malloc(size) ev_realloc (0, (size)) 761#define ev_malloc(size) ev_realloc (0, (size))
430#define ev_free(ptr) ev_realloc ((ptr), 0) 762#define ev_free(ptr) ev_realloc ((ptr), 0)
431 763
432/*****************************************************************************/ 764/*****************************************************************************/
433 765
766/* set in reify when reification needed */
767#define EV_ANFD_REIFY 1
768
769/* file descriptor info structure */
434typedef struct 770typedef struct
435{ 771{
436 WL head; 772 WL head;
437 unsigned char events; 773 unsigned char events; /* the events watched for */
774 unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
775 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
438 unsigned char reify; 776 unsigned char unused;
777#if EV_USE_EPOLL
778 unsigned int egen; /* generation counter to counter epoll bugs */
779#endif
439#if EV_SELECT_IS_WINSOCKET 780#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
440 SOCKET handle; 781 SOCKET handle;
441#endif 782#endif
783#if EV_USE_IOCP
784 OVERLAPPED or, ow;
785#endif
442} ANFD; 786} ANFD;
443 787
788/* stores the pending event set for a given watcher */
444typedef struct 789typedef struct
445{ 790{
446 W w; 791 W w;
447 int events; 792 int events; /* the pending event set for the given watcher */
448} ANPENDING; 793} ANPENDING;
449 794
450#if EV_USE_INOTIFY 795#if EV_USE_INOTIFY
451/* hash table entry per inotify-id */ 796/* hash table entry per inotify-id */
452typedef struct 797typedef struct
… …
455} ANFS; 800} ANFS;
456#endif 801#endif
457 802
458/* Heap Entry */ 803/* Heap Entry */
459#if EV_HEAP_CACHE_AT 804#if EV_HEAP_CACHE_AT
805 /* a heap element */
460 typedef struct { 806 typedef struct {
461 ev_tstamp at; 807 ev_tstamp at;
462 WT w; 808 WT w;
463 } ANHE; 809 } ANHE;
464 810
465 #define ANHE_w(he) (he).w /* access watcher, read-write */ 811 #define ANHE_w(he) (he).w /* access watcher, read-write */
466 #define ANHE_at(he) (he).at /* access cached at, read-only */ 812 #define ANHE_at(he) (he).at /* access cached at, read-only */
467 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ 813 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
468#else 814#else
815 /* a heap element */
469 typedef WT ANHE; 816 typedef WT ANHE;
470 817
471 #define ANHE_w(he) (he) 818 #define ANHE_w(he) (he)
472 #define ANHE_at(he) (he)->at 819 #define ANHE_at(he) (he)->at
473 #define ANHE_at_cache(he) 820 #define ANHE_at_cache(he)
… …
497 844
498 static int ev_default_loop_ptr; 845 static int ev_default_loop_ptr;
499 846
500#endif 847#endif
501 848
849#if EV_FEATURE_API
850# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
851# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
852# define EV_INVOKE_PENDING invoke_cb (EV_A)
853#else
854# define EV_RELEASE_CB (void)0
855# define EV_ACQUIRE_CB (void)0
856# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
857#endif
858
859#define EVBREAK_RECURSE 0x80
860
502/*****************************************************************************/ 861/*****************************************************************************/
503 862
863#ifndef EV_HAVE_EV_TIME
504ev_tstamp 864ev_tstamp
505ev_time (void) 865ev_time (void)
506{ 866{
507#if EV_USE_REALTIME 867#if EV_USE_REALTIME
868 if (expect_true (have_realtime))
869 {
508 struct timespec ts; 870 struct timespec ts;
509 clock_gettime (CLOCK_REALTIME, &ts); 871 clock_gettime (CLOCK_REALTIME, &ts);
510 return ts.tv_sec + ts.tv_nsec * 1e-9; 872 return ts.tv_sec + ts.tv_nsec * 1e-9;
511#else 873 }
874#endif
875
512 struct timeval tv; 876 struct timeval tv;
513 gettimeofday (&tv, 0); 877 gettimeofday (&tv, 0);
514 return tv.tv_sec + tv.tv_usec * 1e-6; 878 return tv.tv_sec + tv.tv_usec * 1e-6;
515#endif
516} 879}
880#endif
517 881
518ev_tstamp inline_size 882inline_size ev_tstamp
519get_clock (void) 883get_clock (void)
520{ 884{
521#if EV_USE_MONOTONIC 885#if EV_USE_MONOTONIC
522 if (expect_true (have_monotonic)) 886 if (expect_true (have_monotonic))
523 { 887 {
… …
544 if (delay > 0.) 908 if (delay > 0.)
545 { 909 {
546#if EV_USE_NANOSLEEP 910#if EV_USE_NANOSLEEP
547 struct timespec ts; 911 struct timespec ts;
548 912
549 ts.tv_sec = (time_t)delay; 913 EV_TS_SET (ts, delay);
550 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
551
552 nanosleep (&ts, 0); 914 nanosleep (&ts, 0);
553#elif defined(_WIN32) 915#elif defined(_WIN32)
554 Sleep ((unsigned long)(delay * 1e3)); 916 Sleep ((unsigned long)(delay * 1e3));
555#else 917#else
556 struct timeval tv; 918 struct timeval tv;
557 919
558 tv.tv_sec = (time_t)delay; 920 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
559 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 921 /* something not guaranteed by newer posix versions, but guaranteed */
560 922 /* by older ones */
923 EV_TV_SET (tv, delay);
561 select (0, 0, 0, 0, &tv); 924 select (0, 0, 0, 0, &tv);
562#endif 925#endif
563 } 926 }
564} 927}
565 928
566/*****************************************************************************/ 929/*****************************************************************************/
567 930
568#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 931#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
569 932
570int inline_size 933/* find a suitable new size for the given array, */
934/* hopefully by rounding to a nice-to-malloc size */
935inline_size int
571array_nextsize (int elem, int cur, int cnt) 936array_nextsize (int elem, int cur, int cnt)
572{ 937{
573 int ncur = cur + 1; 938 int ncur = cur + 1;
574 939
575 do 940 do
… …
586 } 951 }
587 952
588 return ncur; 953 return ncur;
589} 954}
590 955
591static noinline void * 956static void * noinline ecb_cold
592array_realloc (int elem, void *base, int *cur, int cnt) 957array_realloc (int elem, void *base, int *cur, int cnt)
593{ 958{
594 *cur = array_nextsize (elem, *cur, cnt); 959 *cur = array_nextsize (elem, *cur, cnt);
595 return ev_realloc (base, elem * *cur); 960 return ev_realloc (base, elem * *cur);
596} 961}
962
963#define array_init_zero(base,count) \
964 memset ((void *)(base), 0, sizeof (*(base)) * (count))
597 965
598#define array_needsize(type,base,cur,cnt,init) \ 966#define array_needsize(type,base,cur,cnt,init) \
599 if (expect_false ((cnt) > (cur))) \ 967 if (expect_false ((cnt) > (cur))) \
600 { \ 968 { \
601 int ocur_ = (cur); \ 969 int ocur_ = (cur); \
… …
613 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 981 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
614 } 982 }
615#endif 983#endif
616 984
617#define array_free(stem, idx) \ 985#define array_free(stem, idx) \
618 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 986 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
619 987
620/*****************************************************************************/ 988/*****************************************************************************/
989
990/* dummy callback for pending events */
991static void noinline
992pendingcb (EV_P_ ev_prepare *w, int revents)
993{
994}
621 995
622void noinline 996void noinline
623ev_feed_event (EV_P_ void *w, int revents) 997ev_feed_event (EV_P_ void *w, int revents)
624{ 998{
625 W w_ = (W)w; 999 W w_ = (W)w;
… …
634 pendings [pri][w_->pending - 1].w = w_; 1008 pendings [pri][w_->pending - 1].w = w_;
635 pendings [pri][w_->pending - 1].events = revents; 1009 pendings [pri][w_->pending - 1].events = revents;
636 } 1010 }
637} 1011}
638 1012
639void inline_speed 1013inline_speed void
1014feed_reverse (EV_P_ W w)
1015{
1016 array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
1017 rfeeds [rfeedcnt++] = w;
1018}
1019
1020inline_size void
1021feed_reverse_done (EV_P_ int revents)
1022{
1023 do
1024 ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
1025 while (rfeedcnt);
1026}
1027
1028inline_speed void
640queue_events (EV_P_ W *events, int eventcnt, int type) 1029queue_events (EV_P_ W *events, int eventcnt, int type)
641{ 1030{
642 int i; 1031 int i;
643 1032
644 for (i = 0; i < eventcnt; ++i) 1033 for (i = 0; i < eventcnt; ++i)
645 ev_feed_event (EV_A_ events [i], type); 1034 ev_feed_event (EV_A_ events [i], type);
646} 1035}
647 1036
648/*****************************************************************************/ 1037/*****************************************************************************/
649 1038
650void inline_size 1039inline_speed void
651anfds_init (ANFD *base, int count)
652{
653 while (count--)
654 {
655 base->head = 0;
656 base->events = EV_NONE;
657 base->reify = 0;
658
659 ++base;
660 }
661}
662
663void inline_speed
664fd_event (EV_P_ int fd, int revents) 1040fd_event_nocheck (EV_P_ int fd, int revents)
665{ 1041{
666 ANFD *anfd = anfds + fd; 1042 ANFD *anfd = anfds + fd;
667 ev_io *w; 1043 ev_io *w;
668 1044
669 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1045 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
673 if (ev) 1049 if (ev)
674 ev_feed_event (EV_A_ (W)w, ev); 1050 ev_feed_event (EV_A_ (W)w, ev);
675 } 1051 }
676} 1052}
677 1053
1054/* do not submit kernel events for fds that have reify set */
1055/* because that means they changed while we were polling for new events */
1056inline_speed void
1057fd_event (EV_P_ int fd, int revents)
1058{
1059 ANFD *anfd = anfds + fd;
1060
1061 if (expect_true (!anfd->reify))
1062 fd_event_nocheck (EV_A_ fd, revents);
1063}
1064
678void 1065void
679ev_feed_fd_event (EV_P_ int fd, int revents) 1066ev_feed_fd_event (EV_P_ int fd, int revents)
680{ 1067{
681 if (fd >= 0 && fd < anfdmax) 1068 if (fd >= 0 && fd < anfdmax)
682 fd_event (EV_A_ fd, revents); 1069 fd_event_nocheck (EV_A_ fd, revents);
683} 1070}
684 1071
685void inline_size 1072/* make sure the external fd watch events are in-sync */
1073/* with the kernel/libev internal state */
1074inline_size void
686fd_reify (EV_P) 1075fd_reify (EV_P)
687{ 1076{
688 int i; 1077 int i;
1078
1079#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1080 for (i = 0; i < fdchangecnt; ++i)
1081 {
1082 int fd = fdchanges [i];
1083 ANFD *anfd = anfds + fd;
1084
1085 if (anfd->reify & EV__IOFDSET && anfd->head)
1086 {
1087 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1088
1089 if (handle != anfd->handle)
1090 {
1091 unsigned long arg;
1092
1093 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1094
1095 /* handle changed, but fd didn't - we need to do it in two steps */
1096 backend_modify (EV_A_ fd, anfd->events, 0);
1097 anfd->events = 0;
1098 anfd->handle = handle;
1099 }
1100 }
1101 }
1102#endif
689 1103
690 for (i = 0; i < fdchangecnt; ++i) 1104 for (i = 0; i < fdchangecnt; ++i)
691 { 1105 {
692 int fd = fdchanges [i]; 1106 int fd = fdchanges [i];
693 ANFD *anfd = anfds + fd; 1107 ANFD *anfd = anfds + fd;
694 ev_io *w; 1108 ev_io *w;
695 1109
696 unsigned char events = 0; 1110 unsigned char o_events = anfd->events;
1111 unsigned char o_reify = anfd->reify;
697 1112
698 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1113 anfd->reify = 0;
699 events |= (unsigned char)w->events;
700 1114
701#if EV_SELECT_IS_WINSOCKET 1115 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
702 if (events)
703 { 1116 {
704 unsigned long argp; 1117 anfd->events = 0;
705 #ifdef EV_FD_TO_WIN32_HANDLE 1118
706 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1119 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
707 #else 1120 anfd->events |= (unsigned char)w->events;
708 anfd->handle = _get_osfhandle (fd); 1121
709 #endif 1122 if (o_events != anfd->events)
710 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 1123 o_reify = EV__IOFDSET; /* actually |= */
711 } 1124 }
712#endif
713 1125
714 { 1126 if (o_reify & EV__IOFDSET)
715 unsigned char o_events = anfd->events;
716 unsigned char o_reify = anfd->reify;
717
718 anfd->reify = 0;
719 anfd->events = events;
720
721 if (o_events != events || o_reify & EV_IOFDSET)
722 backend_modify (EV_A_ fd, o_events, events); 1127 backend_modify (EV_A_ fd, o_events, anfd->events);
723 }
724 } 1128 }
725 1129
726 fdchangecnt = 0; 1130 fdchangecnt = 0;
727} 1131}
728 1132
729void inline_size 1133/* something about the given fd changed */
1134inline_size void
730fd_change (EV_P_ int fd, int flags) 1135fd_change (EV_P_ int fd, int flags)
731{ 1136{
732 unsigned char reify = anfds [fd].reify; 1137 unsigned char reify = anfds [fd].reify;
733 anfds [fd].reify |= flags; 1138 anfds [fd].reify |= flags;
734 1139
… …
738 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 1143 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
739 fdchanges [fdchangecnt - 1] = fd; 1144 fdchanges [fdchangecnt - 1] = fd;
740 } 1145 }
741} 1146}
742 1147
743void inline_speed 1148/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1149inline_speed void ecb_cold
744fd_kill (EV_P_ int fd) 1150fd_kill (EV_P_ int fd)
745{ 1151{
746 ev_io *w; 1152 ev_io *w;
747 1153
748 while ((w = (ev_io *)anfds [fd].head)) 1154 while ((w = (ev_io *)anfds [fd].head))
… …
750 ev_io_stop (EV_A_ w); 1156 ev_io_stop (EV_A_ w);
751 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1157 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
752 } 1158 }
753} 1159}
754 1160
755int inline_size 1161/* check whether the given fd is actually valid, for error recovery */
1162inline_size int ecb_cold
756fd_valid (int fd) 1163fd_valid (int fd)
757{ 1164{
758#ifdef _WIN32 1165#ifdef _WIN32
759 return _get_osfhandle (fd) != -1; 1166 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
760#else 1167#else
761 return fcntl (fd, F_GETFD) != -1; 1168 return fcntl (fd, F_GETFD) != -1;
762#endif 1169#endif
763} 1170}
764 1171
765/* called on EBADF to verify fds */ 1172/* called on EBADF to verify fds */
766static void noinline 1173static void noinline ecb_cold
767fd_ebadf (EV_P) 1174fd_ebadf (EV_P)
768{ 1175{
769 int fd; 1176 int fd;
770 1177
771 for (fd = 0; fd < anfdmax; ++fd) 1178 for (fd = 0; fd < anfdmax; ++fd)
772 if (anfds [fd].events) 1179 if (anfds [fd].events)
773 if (!fd_valid (fd) == -1 && errno == EBADF) 1180 if (!fd_valid (fd) && errno == EBADF)
774 fd_kill (EV_A_ fd); 1181 fd_kill (EV_A_ fd);
775} 1182}
776 1183
777/* called on ENOMEM in select/poll to kill some fds and retry */ 1184/* called on ENOMEM in select/poll to kill some fds and retry */
778static void noinline 1185static void noinline ecb_cold
779fd_enomem (EV_P) 1186fd_enomem (EV_P)
780{ 1187{
781 int fd; 1188 int fd;
782 1189
783 for (fd = anfdmax; fd--; ) 1190 for (fd = anfdmax; fd--; )
784 if (anfds [fd].events) 1191 if (anfds [fd].events)
785 { 1192 {
786 fd_kill (EV_A_ fd); 1193 fd_kill (EV_A_ fd);
787 return; 1194 break;
788 } 1195 }
789} 1196}
790 1197
791/* usually called after fork if backend needs to re-arm all fds from scratch */ 1198/* usually called after fork if backend needs to re-arm all fds from scratch */
792static void noinline 1199static void noinline
… …
796 1203
797 for (fd = 0; fd < anfdmax; ++fd) 1204 for (fd = 0; fd < anfdmax; ++fd)
798 if (anfds [fd].events) 1205 if (anfds [fd].events)
799 { 1206 {
800 anfds [fd].events = 0; 1207 anfds [fd].events = 0;
1208 anfds [fd].emask = 0;
801 fd_change (EV_A_ fd, EV_IOFDSET | 1); 1209 fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
802 } 1210 }
803} 1211}
804 1212
1213/* used to prepare libev internal fd's */
1214/* this is not fork-safe */
1215inline_speed void
1216fd_intern (int fd)
1217{
1218#ifdef _WIN32
1219 unsigned long arg = 1;
1220 ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1221#else
1222 fcntl (fd, F_SETFD, FD_CLOEXEC);
1223 fcntl (fd, F_SETFL, O_NONBLOCK);
1224#endif
1225}
1226
805/*****************************************************************************/ 1227/*****************************************************************************/
806 1228
807/* 1229/*
808 * the heap functions want a real array index. array index 0 uis guaranteed to not 1230 * the heap functions want a real array index. array index 0 is guaranteed to not
809 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1231 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
810 * the branching factor of the d-tree. 1232 * the branching factor of the d-tree.
811 */ 1233 */
812 1234
813/* 1235/*
… …
822#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 1244#define HEAP0 (DHEAP - 1) /* index of first element in heap */
823#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 1245#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
824#define UPHEAP_DONE(p,k) ((p) == (k)) 1246#define UPHEAP_DONE(p,k) ((p) == (k))
825 1247
826/* away from the root */ 1248/* away from the root */
827void inline_speed 1249inline_speed void
828downheap (ANHE *heap, int N, int k) 1250downheap (ANHE *heap, int N, int k)
829{ 1251{
830 ANHE he = heap [k]; 1252 ANHE he = heap [k];
831 ANHE *E = heap + N + HEAP0; 1253 ANHE *E = heap + N + HEAP0;
832 1254
… …
872#define HEAP0 1 1294#define HEAP0 1
873#define HPARENT(k) ((k) >> 1) 1295#define HPARENT(k) ((k) >> 1)
874#define UPHEAP_DONE(p,k) (!(p)) 1296#define UPHEAP_DONE(p,k) (!(p))
875 1297
876/* away from the root */ 1298/* away from the root */
877void inline_speed 1299inline_speed void
878downheap (ANHE *heap, int N, int k) 1300downheap (ANHE *heap, int N, int k)
879{ 1301{
880 ANHE he = heap [k]; 1302 ANHE he = heap [k];
881 1303
882 for (;;) 1304 for (;;)
883 { 1305 {
884 int c = k << 1; 1306 int c = k << 1;
885 1307
886 if (c > N + HEAP0 - 1) 1308 if (c >= N + HEAP0)
887 break; 1309 break;
888 1310
889 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 1311 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
890 ? 1 : 0; 1312 ? 1 : 0;
891 1313
… …
902 ev_active (ANHE_w (he)) = k; 1324 ev_active (ANHE_w (he)) = k;
903} 1325}
904#endif 1326#endif
905 1327
906/* towards the root */ 1328/* towards the root */
907void inline_speed 1329inline_speed void
908upheap (ANHE *heap, int k) 1330upheap (ANHE *heap, int k)
909{ 1331{
910 ANHE he = heap [k]; 1332 ANHE he = heap [k];
911 1333
912 for (;;) 1334 for (;;)
… …
923 1345
924 heap [k] = he; 1346 heap [k] = he;
925 ev_active (ANHE_w (he)) = k; 1347 ev_active (ANHE_w (he)) = k;
926} 1348}
927 1349
928void inline_size 1350/* move an element suitably so it is in a correct place */
1351inline_size void
929adjustheap (ANHE *heap, int N, int k) 1352adjustheap (ANHE *heap, int N, int k)
930{ 1353{
931 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 1354 if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
932 upheap (heap, k); 1355 upheap (heap, k);
933 else 1356 else
934 downheap (heap, N, k); 1357 downheap (heap, N, k);
935} 1358}
936 1359
937/* rebuild the heap: this function is used only once and executed rarely */ 1360/* rebuild the heap: this function is used only once and executed rarely */
938void inline_size 1361inline_size void
939reheap (ANHE *heap, int N) 1362reheap (ANHE *heap, int N)
940{ 1363{
941 int i; 1364 int i;
1365
942 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ 1366 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
943 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ 1367 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
944 for (i = 0; i < N; ++i) 1368 for (i = 0; i < N; ++i)
945 upheap (heap, i + HEAP0); 1369 upheap (heap, i + HEAP0);
946} 1370}
947 1371
948#if EV_VERIFY
949static void
950checkheap (ANHE *heap, int N)
951{
952 int i;
953
954 for (i = HEAP0; i < N + HEAP0; ++i)
955 {
956 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
957 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
958 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
959 }
960}
961#endif
962
963/*****************************************************************************/ 1372/*****************************************************************************/
964 1373
1374/* associate signal watchers to a signal signal */
965typedef struct 1375typedef struct
966{ 1376{
1377 EV_ATOMIC_T pending;
1378#if EV_MULTIPLICITY
1379 EV_P;
1380#endif
967 WL head; 1381 WL head;
968 EV_ATOMIC_T gotsig;
969} ANSIG; 1382} ANSIG;
970 1383
971static ANSIG *signals; 1384static ANSIG signals [EV_NSIG - 1];
972static int signalmax;
973
974static EV_ATOMIC_T gotsig;
975
976void inline_size
977signals_init (ANSIG *base, int count)
978{
979 while (count--)
980 {
981 base->head = 0;
982 base->gotsig = 0;
983
984 ++base;
985 }
986}
987 1385
988/*****************************************************************************/ 1386/*****************************************************************************/
989 1387
990void inline_speed 1388#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
991fd_intern (int fd)
992{
993#ifdef _WIN32
994 int arg = 1;
995 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
996#else
997 fcntl (fd, F_SETFD, FD_CLOEXEC);
998 fcntl (fd, F_SETFL, O_NONBLOCK);
999#endif
1000}
1001 1389
1002static void noinline 1390static void noinline ecb_cold
1003evpipe_init (EV_P) 1391evpipe_init (EV_P)
1004{ 1392{
1005 if (!ev_is_active (&pipeev)) 1393 if (!ev_is_active (&pipe_w))
1006 { 1394 {
1007#if EV_USE_EVENTFD 1395# if EV_USE_EVENTFD
1396 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397 if (evfd < 0 && errno == EINVAL)
1008 if ((evfd = eventfd (0, 0)) >= 0) 1398 evfd = eventfd (0, 0);
1399
1400 if (evfd >= 0)
1009 { 1401 {
1010 evpipe [0] = -1; 1402 evpipe [0] = -1;
1011 fd_intern (evfd); 1403 fd_intern (evfd); /* doing it twice doesn't hurt */
1012 ev_io_set (&pipeev, evfd, EV_READ); 1404 ev_io_set (&pipe_w, evfd, EV_READ);
1013 } 1405 }
1014 else 1406 else
1015#endif 1407# endif
1016 { 1408 {
1017 while (pipe (evpipe)) 1409 while (pipe (evpipe))
1018 syserr ("(libev) error creating signal/async pipe"); 1410 ev_syserr ("(libev) error creating signal/async pipe");
1019 1411
1020 fd_intern (evpipe [0]); 1412 fd_intern (evpipe [0]);
1021 fd_intern (evpipe [1]); 1413 fd_intern (evpipe [1]);
1022 ev_io_set (&pipeev, evpipe [0], EV_READ); 1414 ev_io_set (&pipe_w, evpipe [0], EV_READ);
1023 } 1415 }
1024 1416
1025 ev_io_start (EV_A_ &pipeev); 1417 ev_io_start (EV_A_ &pipe_w);
1026 ev_unref (EV_A); /* watcher should not keep loop alive */ 1418 ev_unref (EV_A); /* watcher should not keep loop alive */
1027 } 1419 }
1028} 1420}
1029 1421
1030void inline_size 1422inline_speed void
1031evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1423evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1032{ 1424{
1033 if (!*flag) 1425 if (!*flag)
1034 { 1426 {
1035 int old_errno = errno; /* save errno because write might clobber it */
1036
1037 *flag = 1; 1427 *flag = 1;
1038 1428
1429 pipe_write_skipped = 1;
1430
1431 if (pipe_write_wanted)
1432 {
1433 int old_errno;
1434
1435 pipe_write_skipped = 0;
1436
1437 old_errno = errno; /* save errno because write will clobber it */
1438
1439#if EV_USE_EVENTFD
1440 if (evfd >= 0)
1441 {
1442 uint64_t counter = 1;
1443 write (evfd, &counter, sizeof (uint64_t));
1444 }
1445 else
1446#endif
1447 {
1448 /* win32 people keep sending patches that change this write() to send() */
1449 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1450 /* so when you think this write should be a send instead, please find out */
1451 /* where your send() is from - it's definitely not the microsoft send, and */
1452 /* tell me. thank you. */
1453 write (evpipe [1], &(evpipe [1]), 1);
1454 }
1455
1456 errno = old_errno;
1457 }
1458 }
1459}
1460
1461/* called whenever the libev signal pipe */
1462/* got some events (signal, async) */
1463static void
1464pipecb (EV_P_ ev_io *iow, int revents)
1465{
1466 int i;
1467
1468 if (revents & EV_READ)
1469 {
1039#if EV_USE_EVENTFD 1470#if EV_USE_EVENTFD
1040 if (evfd >= 0) 1471 if (evfd >= 0)
1041 { 1472 {
1042 uint64_t counter = 1; 1473 uint64_t counter;
1043 write (evfd, &counter, sizeof (uint64_t)); 1474 read (evfd, &counter, sizeof (uint64_t));
1044 } 1475 }
1045 else 1476 else
1046#endif 1477#endif
1047 write (evpipe [1], &old_errno, 1); 1478 {
1048
1049 errno = old_errno;
1050 }
1051}
1052
1053static void
1054pipecb (EV_P_ ev_io *iow, int revents)
1055{
1056#if EV_USE_EVENTFD
1057 if (evfd >= 0)
1058 {
1059 uint64_t counter;
1060 read (evfd, &counter, sizeof (uint64_t));
1061 }
1062 else
1063#endif
1064 {
1065 char dummy; 1479 char dummy;
1480 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1066 read (evpipe [0], &dummy, 1); 1481 read (evpipe [0], &dummy, 1);
1482 }
1483 }
1484
1485 pipe_write_skipped = 0;
1486
1487#if EV_SIGNAL_ENABLE
1488 if (sig_pending)
1067 } 1489 {
1490 sig_pending = 0;
1068 1491
1069 if (gotsig && ev_is_default_loop (EV_A)) 1492 for (i = EV_NSIG - 1; i--; )
1070 { 1493 if (expect_false (signals [i].pending))
1071 int signum;
1072 gotsig = 0;
1073
1074 for (signum = signalmax; signum--; )
1075 if (signals [signum].gotsig)
1076 ev_feed_signal_event (EV_A_ signum + 1); 1494 ev_feed_signal_event (EV_A_ i + 1);
1077 } 1495 }
1496#endif
1078 1497
1079#if EV_ASYNC_ENABLE 1498#if EV_ASYNC_ENABLE
1080 if (gotasync) 1499 if (async_pending)
1081 { 1500 {
1082 int i; 1501 async_pending = 0;
1083 gotasync = 0;
1084 1502
1085 for (i = asynccnt; i--; ) 1503 for (i = asynccnt; i--; )
1086 if (asyncs [i]->sent) 1504 if (asyncs [i]->sent)
1087 { 1505 {
1088 asyncs [i]->sent = 0; 1506 asyncs [i]->sent = 0;
… …
1092#endif 1510#endif
1093} 1511}
1094 1512
1095/*****************************************************************************/ 1513/*****************************************************************************/
1096 1514
1515void
1516ev_feed_signal (int signum)
1517{
1518#if EV_MULTIPLICITY
1519 EV_P = signals [signum - 1].loop;
1520
1521 if (!EV_A)
1522 return;
1523#endif
1524
1525 evpipe_init (EV_A);
1526
1527 signals [signum - 1].pending = 1;
1528 evpipe_write (EV_A_ &sig_pending);
1529}
1530
1097static void 1531static void
1098ev_sighandler (int signum) 1532ev_sighandler (int signum)
1099{ 1533{
1100#if EV_MULTIPLICITY
1101 struct ev_loop *loop = &default_loop_struct;
1102#endif
1103
1104#if _WIN32 1534#ifdef _WIN32
1105 signal (signum, ev_sighandler); 1535 signal (signum, ev_sighandler);
1106#endif 1536#endif
1107 1537
1108 signals [signum - 1].gotsig = 1; 1538 ev_feed_signal (signum);
1109 evpipe_write (EV_A_ &gotsig);
1110} 1539}
1111 1540
1112void noinline 1541void noinline
1113ev_feed_signal_event (EV_P_ int signum) 1542ev_feed_signal_event (EV_P_ int signum)
1114{ 1543{
1115 WL w; 1544 WL w;
1116 1545
1546 if (expect_false (signum <= 0 || signum > EV_NSIG))
1547 return;
1548
1549 --signum;
1550
1117#if EV_MULTIPLICITY 1551#if EV_MULTIPLICITY
1118 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1552 /* it is permissible to try to feed a signal to the wrong loop */
1119#endif 1553 /* or, likely more useful, feeding a signal nobody is waiting for */
1120 1554
1121 --signum; 1555 if (expect_false (signals [signum].loop != EV_A))
1122
1123 if (signum < 0 || signum >= signalmax)
1124 return; 1556 return;
1557#endif
1125 1558
1126 signals [signum].gotsig = 0; 1559 signals [signum].pending = 0;
1127 1560
1128 for (w = signals [signum].head; w; w = w->next) 1561 for (w = signals [signum].head; w; w = w->next)
1129 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 1562 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1130} 1563}
1131 1564
1565#if EV_USE_SIGNALFD
1566static void
1567sigfdcb (EV_P_ ev_io *iow, int revents)
1568{
1569 struct signalfd_siginfo si[2], *sip; /* these structs are big */
1570
1571 for (;;)
1572 {
1573 ssize_t res = read (sigfd, si, sizeof (si));
1574
1575 /* not ISO-C, as res might be -1, but works with SuS */
1576 for (sip = si; (char *)sip < (char *)si + res; ++sip)
1577 ev_feed_signal_event (EV_A_ sip->ssi_signo);
1578
1579 if (res < (ssize_t)sizeof (si))
1580 break;
1581 }
1582}
1583#endif
1584
1585#endif
1586
1132/*****************************************************************************/ 1587/*****************************************************************************/
1133 1588
1589#if EV_CHILD_ENABLE
1134static WL childs [EV_PID_HASHSIZE]; 1590static WL childs [EV_PID_HASHSIZE];
1135
1136#ifndef _WIN32
1137 1591
1138static ev_signal childev; 1592static ev_signal childev;
1139 1593
1140#ifndef WIFCONTINUED 1594#ifndef WIFCONTINUED
1141# define WIFCONTINUED(status) 0 1595# define WIFCONTINUED(status) 0
1142#endif 1596#endif
1143 1597
1144void inline_speed 1598/* handle a single child status event */
1599inline_speed void
1145child_reap (EV_P_ int chain, int pid, int status) 1600child_reap (EV_P_ int chain, int pid, int status)
1146{ 1601{
1147 ev_child *w; 1602 ev_child *w;
1148 int traced = WIFSTOPPED (status) || WIFCONTINUED (status); 1603 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1149 1604
1150 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1605 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1151 { 1606 {
1152 if ((w->pid == pid || !w->pid) 1607 if ((w->pid == pid || !w->pid)
1153 && (!traced || (w->flags & 1))) 1608 && (!traced || (w->flags & 1)))
1154 { 1609 {
1155 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ 1610 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
… …
1162 1617
1163#ifndef WCONTINUED 1618#ifndef WCONTINUED
1164# define WCONTINUED 0 1619# define WCONTINUED 0
1165#endif 1620#endif
1166 1621
1622/* called on sigchld etc., calls waitpid */
1167static void 1623static void
1168childcb (EV_P_ ev_signal *sw, int revents) 1624childcb (EV_P_ ev_signal *sw, int revents)
1169{ 1625{
1170 int pid, status; 1626 int pid, status;
1171 1627
… …
1179 /* make sure we are called again until all children have been reaped */ 1635 /* make sure we are called again until all children have been reaped */
1180 /* we need to do it this way so that the callback gets called before we continue */ 1636 /* we need to do it this way so that the callback gets called before we continue */
1181 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1637 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1182 1638
1183 child_reap (EV_A_ pid, pid, status); 1639 child_reap (EV_A_ pid, pid, status);
1184 if (EV_PID_HASHSIZE > 1) 1640 if ((EV_PID_HASHSIZE) > 1)
1185 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1641 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1186} 1642}
1187 1643
1188#endif 1644#endif
1189 1645
1190/*****************************************************************************/ 1646/*****************************************************************************/
1191 1647
1648#if EV_USE_IOCP
1649# include "ev_iocp.c"
1650#endif
1192#if EV_USE_PORT 1651#if EV_USE_PORT
1193# include "ev_port.c" 1652# include "ev_port.c"
1194#endif 1653#endif
1195#if EV_USE_KQUEUE 1654#if EV_USE_KQUEUE
1196# include "ev_kqueue.c" 1655# include "ev_kqueue.c"
… …
1203#endif 1662#endif
1204#if EV_USE_SELECT 1663#if EV_USE_SELECT
1205# include "ev_select.c" 1664# include "ev_select.c"
1206#endif 1665#endif
1207 1666
1208int 1667int ecb_cold
1209ev_version_major (void) 1668ev_version_major (void)
1210{ 1669{
1211 return EV_VERSION_MAJOR; 1670 return EV_VERSION_MAJOR;
1212} 1671}
1213 1672
1214int 1673int ecb_cold
1215ev_version_minor (void) 1674ev_version_minor (void)
1216{ 1675{
1217 return EV_VERSION_MINOR; 1676 return EV_VERSION_MINOR;
1218} 1677}
1219 1678
1220/* return true if we are running with elevated privileges and should ignore env variables */ 1679/* return true if we are running with elevated privileges and should ignore env variables */
1221int inline_size 1680int inline_size ecb_cold
1222enable_secure (void) 1681enable_secure (void)
1223{ 1682{
1224#ifdef _WIN32 1683#ifdef _WIN32
1225 return 0; 1684 return 0;
1226#else 1685#else
1227 return getuid () != geteuid () 1686 return getuid () != geteuid ()
1228 || getgid () != getegid (); 1687 || getgid () != getegid ();
1229#endif 1688#endif
1230} 1689}
1231 1690
1232unsigned int 1691unsigned int ecb_cold
1233ev_supported_backends (void) 1692ev_supported_backends (void)
1234{ 1693{
1235 unsigned int flags = 0; 1694 unsigned int flags = 0;
1236 1695
1237 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 1696 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1241 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 1700 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1242 1701
1243 return flags; 1702 return flags;
1244} 1703}
1245 1704
1246unsigned int 1705unsigned int ecb_cold
1247ev_recommended_backends (void) 1706ev_recommended_backends (void)
1248{ 1707{
1249 unsigned int flags = ev_supported_backends (); 1708 unsigned int flags = ev_supported_backends ();
1250 1709
1251#ifndef __NetBSD__ 1710#ifndef __NetBSD__
1252 /* kqueue is borked on everything but netbsd apparently */ 1711 /* kqueue is borked on everything but netbsd apparently */
1253 /* it usually doesn't work correctly on anything but sockets and pipes */ 1712 /* it usually doesn't work correctly on anything but sockets and pipes */
1254 flags &= ~EVBACKEND_KQUEUE; 1713 flags &= ~EVBACKEND_KQUEUE;
1255#endif 1714#endif
1256#ifdef __APPLE__ 1715#ifdef __APPLE__
1257 // flags &= ~EVBACKEND_KQUEUE; for documentation 1716 /* only select works correctly on that "unix-certified" platform */
1258 flags &= ~EVBACKEND_POLL; 1717 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1718 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1719#endif
1720#ifdef __FreeBSD__
1721 flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1259#endif 1722#endif
1260 1723
1261 return flags; 1724 return flags;
1262} 1725}
1263 1726
1264unsigned int 1727unsigned int ecb_cold
1265ev_embeddable_backends (void) 1728ev_embeddable_backends (void)
1266{ 1729{
1267 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 1730 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1268 1731
1269 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1732 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1270 /* please fix it and tell me how to detect the fix */ 1733 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1271 flags &= ~EVBACKEND_EPOLL; 1734 flags &= ~EVBACKEND_EPOLL;
1272 1735
1273 return flags; 1736 return flags;
1274} 1737}
1275 1738
1276unsigned int 1739unsigned int
1277ev_backend (EV_P) 1740ev_backend (EV_P)
1278{ 1741{
1279 return backend; 1742 return backend;
1280} 1743}
1281 1744
1745#if EV_FEATURE_API
1282unsigned int 1746unsigned int
1283ev_loop_count (EV_P) 1747ev_iteration (EV_P)
1284{ 1748{
1285 return loop_count; 1749 return loop_count;
1750}
1751
1752unsigned int
1753ev_depth (EV_P)
1754{
1755 return loop_depth;
1286} 1756}
1287 1757
1288void 1758void
1289ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 1759ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1290{ 1760{
… …
1295ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 1765ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1296{ 1766{
1297 timeout_blocktime = interval; 1767 timeout_blocktime = interval;
1298} 1768}
1299 1769
1770void
1771ev_set_userdata (EV_P_ void *data)
1772{
1773 userdata = data;
1774}
1775
1776void *
1777ev_userdata (EV_P)
1778{
1779 return userdata;
1780}
1781
1782void
1783ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1784{
1785 invoke_cb = invoke_pending_cb;
1786}
1787
1788void
1789ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1790{
1791 release_cb = release;
1792 acquire_cb = acquire;
1793}
1794#endif
1795
1796/* initialise a loop structure, must be zero-initialised */
1300static void noinline 1797static void noinline ecb_cold
1301loop_init (EV_P_ unsigned int flags) 1798loop_init (EV_P_ unsigned int flags)
1302{ 1799{
1303 if (!backend) 1800 if (!backend)
1304 { 1801 {
1802 origflags = flags;
1803
1804#if EV_USE_REALTIME
1805 if (!have_realtime)
1806 {
1807 struct timespec ts;
1808
1809 if (!clock_gettime (CLOCK_REALTIME, &ts))
1810 have_realtime = 1;
1811 }
1812#endif
1813
1305#if EV_USE_MONOTONIC 1814#if EV_USE_MONOTONIC
1815 if (!have_monotonic)
1306 { 1816 {
1307 struct timespec ts; 1817 struct timespec ts;
1818
1308 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1819 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1309 have_monotonic = 1; 1820 have_monotonic = 1;
1310 } 1821 }
1311#endif
1312
1313 ev_rt_now = ev_time ();
1314 mn_now = get_clock ();
1315 now_floor = mn_now;
1316 rtmn_diff = ev_rt_now - mn_now;
1317
1318 io_blocktime = 0.;
1319 timeout_blocktime = 0.;
1320 backend = 0;
1321 backend_fd = -1;
1322 gotasync = 0;
1323#if EV_USE_INOTIFY
1324 fs_fd = -2;
1325#endif 1822#endif
1326 1823
1327 /* pid check not overridable via env */ 1824 /* pid check not overridable via env */
1328#ifndef _WIN32 1825#ifndef _WIN32
1329 if (flags & EVFLAG_FORKCHECK) 1826 if (flags & EVFLAG_FORKCHECK)
… …
1333 if (!(flags & EVFLAG_NOENV) 1830 if (!(flags & EVFLAG_NOENV)
1334 && !enable_secure () 1831 && !enable_secure ()
1335 && getenv ("LIBEV_FLAGS")) 1832 && getenv ("LIBEV_FLAGS"))
1336 flags = atoi (getenv ("LIBEV_FLAGS")); 1833 flags = atoi (getenv ("LIBEV_FLAGS"));
1337 1834
1338 if (!(flags & 0x0000ffffU)) 1835 ev_rt_now = ev_time ();
1836 mn_now = get_clock ();
1837 now_floor = mn_now;
1838 rtmn_diff = ev_rt_now - mn_now;
1839#if EV_FEATURE_API
1840 invoke_cb = ev_invoke_pending;
1841#endif
1842
1843 io_blocktime = 0.;
1844 timeout_blocktime = 0.;
1845 backend = 0;
1846 backend_fd = -1;
1847 sig_pending = 0;
1848#if EV_ASYNC_ENABLE
1849 async_pending = 0;
1850#endif
1851 pipe_write_skipped = 0;
1852 pipe_write_wanted = 0;
1853#if EV_USE_INOTIFY
1854 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1855#endif
1856#if EV_USE_SIGNALFD
1857 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1858#endif
1859
1860 if (!(flags & EVBACKEND_MASK))
1339 flags |= ev_recommended_backends (); 1861 flags |= ev_recommended_backends ();
1340 1862
1863#if EV_USE_IOCP
1864 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1865#endif
1341#if EV_USE_PORT 1866#if EV_USE_PORT
1342 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1867 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1343#endif 1868#endif
1344#if EV_USE_KQUEUE 1869#if EV_USE_KQUEUE
1345 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1870 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1352#endif 1877#endif
1353#if EV_USE_SELECT 1878#if EV_USE_SELECT
1354 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1879 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1355#endif 1880#endif
1356 1881
1882 ev_prepare_init (&pending_w, pendingcb);
1883
1884#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1357 ev_init (&pipeev, pipecb); 1885 ev_init (&pipe_w, pipecb);
1358 ev_set_priority (&pipeev, EV_MAXPRI); 1886 ev_set_priority (&pipe_w, EV_MAXPRI);
1887#endif
1359 } 1888 }
1360} 1889}
1361 1890
1362static void noinline 1891/* free up a loop structure */
1892void ecb_cold
1363loop_destroy (EV_P) 1893ev_loop_destroy (EV_P)
1364{ 1894{
1365 int i; 1895 int i;
1366 1896
1897#if EV_MULTIPLICITY
1898 /* mimic free (0) */
1899 if (!EV_A)
1900 return;
1901#endif
1902
1903#if EV_CLEANUP_ENABLE
1904 /* queue cleanup watchers (and execute them) */
1905 if (expect_false (cleanupcnt))
1906 {
1907 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
1908 EV_INVOKE_PENDING;
1909 }
1910#endif
1911
1912#if EV_CHILD_ENABLE
1913 if (ev_is_active (&childev))
1914 {
1915 ev_ref (EV_A); /* child watcher */
1916 ev_signal_stop (EV_A_ &childev);
1917 }
1918#endif
1919
1367 if (ev_is_active (&pipeev)) 1920 if (ev_is_active (&pipe_w))
1368 { 1921 {
1369 ev_ref (EV_A); /* signal watcher */ 1922 /*ev_ref (EV_A);*/
1370 ev_io_stop (EV_A_ &pipeev); 1923 /*ev_io_stop (EV_A_ &pipe_w);*/
1371 1924
1372#if EV_USE_EVENTFD 1925#if EV_USE_EVENTFD
1373 if (evfd >= 0) 1926 if (evfd >= 0)
1374 close (evfd); 1927 close (evfd);
1375#endif 1928#endif
1376 1929
1377 if (evpipe [0] >= 0) 1930 if (evpipe [0] >= 0)
1378 { 1931 {
1379 close (evpipe [0]); 1932 EV_WIN32_CLOSE_FD (evpipe [0]);
1380 close (evpipe [1]); 1933 EV_WIN32_CLOSE_FD (evpipe [1]);
1381 } 1934 }
1382 } 1935 }
1936
1937#if EV_USE_SIGNALFD
1938 if (ev_is_active (&sigfd_w))
1939 close (sigfd);
1940#endif
1383 1941
1384#if EV_USE_INOTIFY 1942#if EV_USE_INOTIFY
1385 if (fs_fd >= 0) 1943 if (fs_fd >= 0)
1386 close (fs_fd); 1944 close (fs_fd);
1387#endif 1945#endif
1388 1946
1389 if (backend_fd >= 0) 1947 if (backend_fd >= 0)
1390 close (backend_fd); 1948 close (backend_fd);
1391 1949
1950#if EV_USE_IOCP
1951 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
1952#endif
1392#if EV_USE_PORT 1953#if EV_USE_PORT
1393 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1954 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1394#endif 1955#endif
1395#if EV_USE_KQUEUE 1956#if EV_USE_KQUEUE
1396 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 1957 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1411#if EV_IDLE_ENABLE 1972#if EV_IDLE_ENABLE
1412 array_free (idle, [i]); 1973 array_free (idle, [i]);
1413#endif 1974#endif
1414 } 1975 }
1415 1976
1416 ev_free (anfds); anfdmax = 0; 1977 ev_free (anfds); anfds = 0; anfdmax = 0;
1417 1978
1418 /* have to use the microsoft-never-gets-it-right macro */ 1979 /* have to use the microsoft-never-gets-it-right macro */
1980 array_free (rfeed, EMPTY);
1419 array_free (fdchange, EMPTY); 1981 array_free (fdchange, EMPTY);
1420 array_free (timer, EMPTY); 1982 array_free (timer, EMPTY);
1421#if EV_PERIODIC_ENABLE 1983#if EV_PERIODIC_ENABLE
1422 array_free (periodic, EMPTY); 1984 array_free (periodic, EMPTY);
1423#endif 1985#endif
1424#if EV_FORK_ENABLE 1986#if EV_FORK_ENABLE
1425 array_free (fork, EMPTY); 1987 array_free (fork, EMPTY);
1426#endif 1988#endif
1989#if EV_CLEANUP_ENABLE
1990 array_free (cleanup, EMPTY);
1991#endif
1427 array_free (prepare, EMPTY); 1992 array_free (prepare, EMPTY);
1428 array_free (check, EMPTY); 1993 array_free (check, EMPTY);
1429#if EV_ASYNC_ENABLE 1994#if EV_ASYNC_ENABLE
1430 array_free (async, EMPTY); 1995 array_free (async, EMPTY);
1431#endif 1996#endif
1432 1997
1433 backend = 0; 1998 backend = 0;
1999
2000#if EV_MULTIPLICITY
2001 if (ev_is_default_loop (EV_A))
2002#endif
2003 ev_default_loop_ptr = 0;
2004#if EV_MULTIPLICITY
2005 else
2006 ev_free (EV_A);
2007#endif
1434} 2008}
1435 2009
1436#if EV_USE_INOTIFY 2010#if EV_USE_INOTIFY
1437void inline_size infy_fork (EV_P); 2011inline_size void infy_fork (EV_P);
1438#endif 2012#endif
1439 2013
1440void inline_size 2014inline_size void
1441loop_fork (EV_P) 2015loop_fork (EV_P)
1442{ 2016{
1443#if EV_USE_PORT 2017#if EV_USE_PORT
1444 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 2018 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1445#endif 2019#endif
… …
1451#endif 2025#endif
1452#if EV_USE_INOTIFY 2026#if EV_USE_INOTIFY
1453 infy_fork (EV_A); 2027 infy_fork (EV_A);
1454#endif 2028#endif
1455 2029
1456 if (ev_is_active (&pipeev)) 2030 if (ev_is_active (&pipe_w))
1457 { 2031 {
1458 /* this "locks" the handlers against writing to the pipe */ 2032 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1459 /* while we modify the fd vars */
1460 gotsig = 1;
1461#if EV_ASYNC_ENABLE
1462 gotasync = 1;
1463#endif
1464 2033
1465 ev_ref (EV_A); 2034 ev_ref (EV_A);
1466 ev_io_stop (EV_A_ &pipeev); 2035 ev_io_stop (EV_A_ &pipe_w);
1467 2036
1468#if EV_USE_EVENTFD 2037#if EV_USE_EVENTFD
1469 if (evfd >= 0) 2038 if (evfd >= 0)
1470 close (evfd); 2039 close (evfd);
1471#endif 2040#endif
1472 2041
1473 if (evpipe [0] >= 0) 2042 if (evpipe [0] >= 0)
1474 { 2043 {
1475 close (evpipe [0]); 2044 EV_WIN32_CLOSE_FD (evpipe [0]);
1476 close (evpipe [1]); 2045 EV_WIN32_CLOSE_FD (evpipe [1]);
1477 } 2046 }
1478 2047
2048#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1479 evpipe_init (EV_A); 2049 evpipe_init (EV_A);
1480 /* now iterate over everything, in case we missed something */ 2050 /* now iterate over everything, in case we missed something */
1481 pipecb (EV_A_ &pipeev, EV_READ); 2051 pipecb (EV_A_ &pipe_w, EV_READ);
2052#endif
1482 } 2053 }
1483 2054
1484 postfork = 0; 2055 postfork = 0;
1485} 2056}
1486 2057
1487#if EV_MULTIPLICITY 2058#if EV_MULTIPLICITY
1488 2059
1489struct ev_loop * 2060struct ev_loop * ecb_cold
1490ev_loop_new (unsigned int flags) 2061ev_loop_new (unsigned int flags)
1491{ 2062{
1492 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2063 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493 2064
1494 memset (loop, 0, sizeof (struct ev_loop)); 2065 memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496 loop_init (EV_A_ flags); 2066 loop_init (EV_A_ flags);
1497 2067
1498 if (ev_backend (EV_A)) 2068 if (ev_backend (EV_A))
1499 return loop; 2069 return EV_A;
1500 2070
2071 ev_free (EV_A);
1501 return 0; 2072 return 0;
1502} 2073}
1503 2074
1504void 2075#endif /* multiplicity */
1505ev_loop_destroy (EV_P)
1506{
1507 loop_destroy (EV_A);
1508 ev_free (loop);
1509}
1510
1511void
1512ev_loop_fork (EV_P)
1513{
1514 postfork = 1; /* must be in line with ev_default_fork */
1515}
1516 2076
1517#if EV_VERIFY 2077#if EV_VERIFY
1518static void 2078static void noinline ecb_cold
2079verify_watcher (EV_P_ W w)
2080{
2081 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2082
2083 if (w->pending)
2084 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2085}
2086
2087static void noinline ecb_cold
2088verify_heap (EV_P_ ANHE *heap, int N)
2089{
2090 int i;
2091
2092 for (i = HEAP0; i < N + HEAP0; ++i)
2093 {
2094 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
2095 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
2096 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
2097
2098 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2099 }
2100}
2101
2102static void noinline ecb_cold
1519array_check (W **ws, int cnt) 2103array_verify (EV_P_ W *ws, int cnt)
1520{ 2104{
1521 while (cnt--) 2105 while (cnt--)
2106 {
1522 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2107 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
2108 verify_watcher (EV_A_ ws [cnt]);
2109 }
1523} 2110}
1524#endif 2111#endif
1525 2112
1526void 2113#if EV_FEATURE_API
2114void ecb_cold
1527ev_loop_verify (EV_P) 2115ev_verify (EV_P)
1528{ 2116{
1529#if EV_VERIFY 2117#if EV_VERIFY
1530 int i; 2118 int i;
2119 WL w;
1531 2120
2121 assert (activecnt >= -1);
2122
2123 assert (fdchangemax >= fdchangecnt);
2124 for (i = 0; i < fdchangecnt; ++i)
2125 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2126
2127 assert (anfdmax >= 0);
2128 for (i = 0; i < anfdmax; ++i)
2129 for (w = anfds [i].head; w; w = w->next)
2130 {
2131 verify_watcher (EV_A_ (W)w);
2132 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2133 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2134 }
2135
2136 assert (timermax >= timercnt);
1532 checkheap (timers, timercnt); 2137 verify_heap (EV_A_ timers, timercnt);
2138
1533#if EV_PERIODIC_ENABLE 2139#if EV_PERIODIC_ENABLE
2140 assert (periodicmax >= periodiccnt);
1534 checkheap (periodics, periodiccnt); 2141 verify_heap (EV_A_ periodics, periodiccnt);
1535#endif 2142#endif
1536 2143
2144 for (i = NUMPRI; i--; )
2145 {
2146 assert (pendingmax [i] >= pendingcnt [i]);
1537#if EV_IDLE_ENABLE 2147#if EV_IDLE_ENABLE
1538 for (i = NUMPRI; i--; ) 2148 assert (idleall >= 0);
2149 assert (idlemax [i] >= idlecnt [i]);
1539 array_check ((W **)idles [i], idlecnt [i]); 2150 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1540#endif 2151#endif
2152 }
2153
1541#if EV_FORK_ENABLE 2154#if EV_FORK_ENABLE
2155 assert (forkmax >= forkcnt);
1542 array_check ((W **)forks, forkcnt); 2156 array_verify (EV_A_ (W *)forks, forkcnt);
1543#endif 2157#endif
2158
2159#if EV_CLEANUP_ENABLE
2160 assert (cleanupmax >= cleanupcnt);
2161 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2162#endif
2163
1544#if EV_ASYNC_ENABLE 2164#if EV_ASYNC_ENABLE
2165 assert (asyncmax >= asynccnt);
1545 array_check ((W **)asyncs, asynccnt); 2166 array_verify (EV_A_ (W *)asyncs, asynccnt);
2167#endif
2168
2169#if EV_PREPARE_ENABLE
2170 assert (preparemax >= preparecnt);
2171 array_verify (EV_A_ (W *)prepares, preparecnt);
2172#endif
2173
2174#if EV_CHECK_ENABLE
2175 assert (checkmax >= checkcnt);
2176 array_verify (EV_A_ (W *)checks, checkcnt);
2177#endif
2178
2179# if 0
2180#if EV_CHILD_ENABLE
2181 for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
2182 for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
2183#endif
1546#endif 2184# endif
1547 array_check ((W **)prepares, preparecnt);
1548 array_check ((W **)checks, checkcnt);
1549#endif 2185#endif
1550} 2186}
1551 2187#endif
1552#endif /* multiplicity */
1553 2188
1554#if EV_MULTIPLICITY 2189#if EV_MULTIPLICITY
1555struct ev_loop * 2190struct ev_loop * ecb_cold
1556ev_default_loop_init (unsigned int flags)
1557#else 2191#else
1558int 2192int
2193#endif
1559ev_default_loop (unsigned int flags) 2194ev_default_loop (unsigned int flags)
1560#endif
1561{ 2195{
1562 if (!ev_default_loop_ptr) 2196 if (!ev_default_loop_ptr)
1563 { 2197 {
1564#if EV_MULTIPLICITY 2198#if EV_MULTIPLICITY
1565 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 2199 EV_P = ev_default_loop_ptr = &default_loop_struct;
1566#else 2200#else
1567 ev_default_loop_ptr = 1; 2201 ev_default_loop_ptr = 1;
1568#endif 2202#endif
1569 2203
1570 loop_init (EV_A_ flags); 2204 loop_init (EV_A_ flags);
1571 2205
1572 if (ev_backend (EV_A)) 2206 if (ev_backend (EV_A))
1573 { 2207 {
1574#ifndef _WIN32 2208#if EV_CHILD_ENABLE
1575 ev_signal_init (&childev, childcb, SIGCHLD); 2209 ev_signal_init (&childev, childcb, SIGCHLD);
1576 ev_set_priority (&childev, EV_MAXPRI); 2210 ev_set_priority (&childev, EV_MAXPRI);
1577 ev_signal_start (EV_A_ &childev); 2211 ev_signal_start (EV_A_ &childev);
1578 ev_unref (EV_A); /* child watcher should not keep loop alive */ 2212 ev_unref (EV_A); /* child watcher should not keep loop alive */
1579#endif 2213#endif
… …
1584 2218
1585 return ev_default_loop_ptr; 2219 return ev_default_loop_ptr;
1586} 2220}
1587 2221
1588void 2222void
1589ev_default_destroy (void) 2223ev_loop_fork (EV_P)
1590{ 2224{
1591#if EV_MULTIPLICITY
1592 struct ev_loop *loop = ev_default_loop_ptr;
1593#endif
1594
1595#ifndef _WIN32
1596 ev_ref (EV_A); /* child watcher */
1597 ev_signal_stop (EV_A_ &childev);
1598#endif
1599
1600 loop_destroy (EV_A);
1601}
1602
1603void
1604ev_default_fork (void)
1605{
1606#if EV_MULTIPLICITY
1607 struct ev_loop *loop = ev_default_loop_ptr;
1608#endif
1609
1610 if (backend)
1611 postfork = 1; /* must be in line with ev_loop_fork */ 2225 postfork = 1; /* must be in line with ev_default_fork */
1612} 2226}
1613 2227
1614/*****************************************************************************/ 2228/*****************************************************************************/
1615 2229
1616void 2230void
1617ev_invoke (EV_P_ void *w, int revents) 2231ev_invoke (EV_P_ void *w, int revents)
1618{ 2232{
1619 EV_CB_INVOKE ((W)w, revents); 2233 EV_CB_INVOKE ((W)w, revents);
1620} 2234}
1621 2235
1622void inline_speed 2236unsigned int
1623call_pending (EV_P) 2237ev_pending_count (EV_P)
2238{
2239 int pri;
2240 unsigned int count = 0;
2241
2242 for (pri = NUMPRI; pri--; )
2243 count += pendingcnt [pri];
2244
2245 return count;
2246}
2247
2248void noinline
2249ev_invoke_pending (EV_P)
1624{ 2250{
1625 int pri; 2251 int pri;
1626 2252
1627 for (pri = NUMPRI; pri--; ) 2253 for (pri = NUMPRI; pri--; )
1628 while (pendingcnt [pri]) 2254 while (pendingcnt [pri])
1629 { 2255 {
1630 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2256 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631 2257
1632 if (expect_true (p->w))
1633 {
1634 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1635
1636 p->w->pending = 0; 2258 p->w->pending = 0;
1637 EV_CB_INVOKE (p->w, p->events); 2259 EV_CB_INVOKE (p->w, p->events);
1638 EV_FREQUENT_CHECK; 2260 EV_FREQUENT_CHECK;
1639 }
1640 } 2261 }
1641} 2262}
1642 2263
1643#if EV_IDLE_ENABLE 2264#if EV_IDLE_ENABLE
1644void inline_size 2265/* make idle watchers pending. this handles the "call-idle */
2266/* only when higher priorities are idle" logic */
2267inline_size void
1645idle_reify (EV_P) 2268idle_reify (EV_P)
1646{ 2269{
1647 if (expect_false (idleall)) 2270 if (expect_false (idleall))
1648 { 2271 {
1649 int pri; 2272 int pri;
… …
1661 } 2284 }
1662 } 2285 }
1663} 2286}
1664#endif 2287#endif
1665 2288
1666void inline_size 2289/* make timers pending */
2290inline_size void
1667timers_reify (EV_P) 2291timers_reify (EV_P)
1668{ 2292{
1669 EV_FREQUENT_CHECK; 2293 EV_FREQUENT_CHECK;
1670 2294
1671 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 2295 if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1672 { 2296 {
1673 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 2297 do
1674
1675 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1676
1677 /* first reschedule or stop timer */
1678 if (w->repeat)
1679 { 2298 {
2299 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
2300
2301 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
2302
2303 /* first reschedule or stop timer */
2304 if (w->repeat)
2305 {
1680 ev_at (w) += w->repeat; 2306 ev_at (w) += w->repeat;
1681 if (ev_at (w) < mn_now) 2307 if (ev_at (w) < mn_now)
1682 ev_at (w) = mn_now; 2308 ev_at (w) = mn_now;
1683 2309
1684 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 2310 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1685 2311
1686 ANHE_at_cache (timers [HEAP0]); 2312 ANHE_at_cache (timers [HEAP0]);
1687 downheap (timers, timercnt, HEAP0); 2313 downheap (timers, timercnt, HEAP0);
2314 }
2315 else
2316 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
2317
2318 EV_FREQUENT_CHECK;
2319 feed_reverse (EV_A_ (W)w);
1688 } 2320 }
1689 else 2321 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1690 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1691 2322
1692 EV_FREQUENT_CHECK; 2323 feed_reverse_done (EV_A_ EV_TIMER);
1693 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1694 } 2324 }
1695} 2325}
1696 2326
1697#if EV_PERIODIC_ENABLE 2327#if EV_PERIODIC_ENABLE
1698void inline_size 2328
2329static void noinline
2330periodic_recalc (EV_P_ ev_periodic *w)
2331{
2332 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2333 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2334
2335 /* the above almost always errs on the low side */
2336 while (at <= ev_rt_now)
2337 {
2338 ev_tstamp nat = at + w->interval;
2339
2340 /* when resolution fails us, we use ev_rt_now */
2341 if (expect_false (nat == at))
2342 {
2343 at = ev_rt_now;
2344 break;
2345 }
2346
2347 at = nat;
2348 }
2349
2350 ev_at (w) = at;
2351}
2352
2353/* make periodics pending */
2354inline_size void
1699periodics_reify (EV_P) 2355periodics_reify (EV_P)
1700{ 2356{
1701 EV_FREQUENT_CHECK; 2357 EV_FREQUENT_CHECK;
1702 2358
1703 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 2359 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704 { 2360 {
1705 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 2361 int feed_count = 0;
1706 2362
1707 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 2363 do
1708
1709 /* first reschedule or stop timer */
1710 if (w->reschedule_cb)
1711 { 2364 {
2365 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2366
2367 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
2368
2369 /* first reschedule or stop timer */
2370 if (w->reschedule_cb)
2371 {
1712 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2372 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713 2373
1714 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 2374 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715 2375
1716 ANHE_at_cache (periodics [HEAP0]); 2376 ANHE_at_cache (periodics [HEAP0]);
1717 downheap (periodics, periodiccnt, HEAP0); 2377 downheap (periodics, periodiccnt, HEAP0);
2378 }
2379 else if (w->interval)
2380 {
2381 periodic_recalc (EV_A_ w);
2382 ANHE_at_cache (periodics [HEAP0]);
2383 downheap (periodics, periodiccnt, HEAP0);
2384 }
2385 else
2386 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
2387
2388 EV_FREQUENT_CHECK;
2389 feed_reverse (EV_A_ (W)w);
1718 } 2390 }
1719 else if (w->interval) 2391 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1720 {
1721 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1722 /* if next trigger time is not sufficiently in the future, put it there */
1723 /* this might happen because of floating point inexactness */
1724 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1725 {
1726 ev_at (w) += w->interval;
1727 2392
1728 /* if interval is unreasonably low we might still have a time in the past */
1729 /* so correct this. this will make the periodic very inexact, but the user */
1730 /* has effectively asked to get triggered more often than possible */
1731 if (ev_at (w) < ev_rt_now)
1732 ev_at (w) = ev_rt_now;
1733 }
1734
1735 ANHE_at_cache (periodics [HEAP0]);
1736 downheap (periodics, periodiccnt, HEAP0);
1737 }
1738 else
1739 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1740
1741 EV_FREQUENT_CHECK;
1742 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 2393 feed_reverse_done (EV_A_ EV_PERIODIC);
1743 } 2394 }
1744} 2395}
1745 2396
2397/* simply recalculate all periodics */
2398/* TODO: maybe ensure that at least one event happens when jumping forward? */
1746static void noinline 2399static void noinline ecb_cold
1747periodics_reschedule (EV_P) 2400periodics_reschedule (EV_P)
1748{ 2401{
1749 int i; 2402 int i;
1750 2403
1751 /* adjust periodics after time jump */ 2404 /* adjust periodics after time jump */
… …
1754 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2407 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1755 2408
1756 if (w->reschedule_cb) 2409 if (w->reschedule_cb)
1757 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2410 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1758 else if (w->interval) 2411 else if (w->interval)
1759 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2412 periodic_recalc (EV_A_ w);
1760 2413
1761 ANHE_at_cache (periodics [i]); 2414 ANHE_at_cache (periodics [i]);
1762 } 2415 }
1763 2416
1764 reheap (periodics, periodiccnt); 2417 reheap (periodics, periodiccnt);
1765} 2418}
1766#endif 2419#endif
1767 2420
1768void inline_speed 2421/* adjust all timers by a given offset */
2422static void noinline ecb_cold
2423timers_reschedule (EV_P_ ev_tstamp adjust)
2424{
2425 int i;
2426
2427 for (i = 0; i < timercnt; ++i)
2428 {
2429 ANHE *he = timers + i + HEAP0;
2430 ANHE_w (*he)->at += adjust;
2431 ANHE_at_cache (*he);
2432 }
2433}
2434
2435/* fetch new monotonic and realtime times from the kernel */
2436/* also detect if there was a timejump, and act accordingly */
2437inline_speed void
1769time_update (EV_P_ ev_tstamp max_block) 2438time_update (EV_P_ ev_tstamp max_block)
1770{ 2439{
1771 int i;
1772
1773#if EV_USE_MONOTONIC 2440#if EV_USE_MONOTONIC
1774 if (expect_true (have_monotonic)) 2441 if (expect_true (have_monotonic))
1775 { 2442 {
2443 int i;
1776 ev_tstamp odiff = rtmn_diff; 2444 ev_tstamp odiff = rtmn_diff;
1777 2445
1778 mn_now = get_clock (); 2446 mn_now = get_clock ();
1779 2447
1780 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ 2448 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
… …
1796 * doesn't hurt either as we only do this on time-jumps or 2464 * doesn't hurt either as we only do this on time-jumps or
1797 * in the unlikely event of having been preempted here. 2465 * in the unlikely event of having been preempted here.
1798 */ 2466 */
1799 for (i = 4; --i; ) 2467 for (i = 4; --i; )
1800 { 2468 {
2469 ev_tstamp diff;
1801 rtmn_diff = ev_rt_now - mn_now; 2470 rtmn_diff = ev_rt_now - mn_now;
1802 2471
2472 diff = odiff - rtmn_diff;
2473
1803 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2474 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1804 return; /* all is well */ 2475 return; /* all is well */
1805 2476
1806 ev_rt_now = ev_time (); 2477 ev_rt_now = ev_time ();
1807 mn_now = get_clock (); 2478 mn_now = get_clock ();
1808 now_floor = mn_now; 2479 now_floor = mn_now;
1809 } 2480 }
1810 2481
2482 /* no timer adjustment, as the monotonic clock doesn't jump */
2483 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1811# if EV_PERIODIC_ENABLE 2484# if EV_PERIODIC_ENABLE
1812 periodics_reschedule (EV_A); 2485 periodics_reschedule (EV_A);
1813# endif 2486# endif
1814 /* no timer adjustment, as the monotonic clock doesn't jump */
1815 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1816 } 2487 }
1817 else 2488 else
1818#endif 2489#endif
1819 { 2490 {
1820 ev_rt_now = ev_time (); 2491 ev_rt_now = ev_time ();
1821 2492
1822 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) 2493 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1823 { 2494 {
2495 /* adjust timers. this is easy, as the offset is the same for all of them */
2496 timers_reschedule (EV_A_ ev_rt_now - mn_now);
1824#if EV_PERIODIC_ENABLE 2497#if EV_PERIODIC_ENABLE
1825 periodics_reschedule (EV_A); 2498 periodics_reschedule (EV_A);
1826#endif 2499#endif
1827 /* adjust timers. this is easy, as the offset is the same for all of them */
1828 for (i = 0; i < timercnt; ++i)
1829 {
1830 ANHE *he = timers + i + HEAP0;
1831 ANHE_w (*he)->at += ev_rt_now - mn_now;
1832 ANHE_at_cache (*he);
1833 }
1834 } 2500 }
1835 2501
1836 mn_now = ev_rt_now; 2502 mn_now = ev_rt_now;
1837 } 2503 }
1838} 2504}
1839 2505
1840void 2506void
1841ev_ref (EV_P)
1842{
1843 ++activecnt;
1844}
1845
1846void
1847ev_unref (EV_P)
1848{
1849 --activecnt;
1850}
1851
1852static int loop_done;
1853
1854void
1855ev_loop (EV_P_ int flags) 2507ev_run (EV_P_ int flags)
1856{ 2508{
2509#if EV_FEATURE_API
2510 ++loop_depth;
2511#endif
2512
2513 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2514
1857 loop_done = EVUNLOOP_CANCEL; 2515 loop_done = EVBREAK_CANCEL;
1858 2516
1859 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 2517 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1860 2518
1861 do 2519 do
1862 { 2520 {
1863#if EV_VERIFY >= 2 2521#if EV_VERIFY >= 2
1864 ev_loop_verify (EV_A); 2522 ev_verify (EV_A);
1865#endif 2523#endif
1866 2524
1867#ifndef _WIN32 2525#ifndef _WIN32
1868 if (expect_false (curpid)) /* penalise the forking check even more */ 2526 if (expect_false (curpid)) /* penalise the forking check even more */
1869 if (expect_false (getpid () != curpid)) 2527 if (expect_false (getpid () != curpid))
… …
1877 /* we might have forked, so queue fork handlers */ 2535 /* we might have forked, so queue fork handlers */
1878 if (expect_false (postfork)) 2536 if (expect_false (postfork))
1879 if (forkcnt) 2537 if (forkcnt)
1880 { 2538 {
1881 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 2539 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1882 call_pending (EV_A); 2540 EV_INVOKE_PENDING;
1883 } 2541 }
1884#endif 2542#endif
1885 2543
2544#if EV_PREPARE_ENABLE
1886 /* queue prepare watchers (and execute them) */ 2545 /* queue prepare watchers (and execute them) */
1887 if (expect_false (preparecnt)) 2546 if (expect_false (preparecnt))
1888 { 2547 {
1889 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 2548 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1890 call_pending (EV_A); 2549 EV_INVOKE_PENDING;
1891 } 2550 }
2551#endif
1892 2552
1893 if (expect_false (!activecnt)) 2553 if (expect_false (loop_done))
1894 break; 2554 break;
1895 2555
1896 /* we might have forked, so reify kernel state if necessary */ 2556 /* we might have forked, so reify kernel state if necessary */
1897 if (expect_false (postfork)) 2557 if (expect_false (postfork))
1898 loop_fork (EV_A); 2558 loop_fork (EV_A);
… …
1903 /* calculate blocking time */ 2563 /* calculate blocking time */
1904 { 2564 {
1905 ev_tstamp waittime = 0.; 2565 ev_tstamp waittime = 0.;
1906 ev_tstamp sleeptime = 0.; 2566 ev_tstamp sleeptime = 0.;
1907 2567
2568 /* remember old timestamp for io_blocktime calculation */
2569 ev_tstamp prev_mn_now = mn_now;
2570
2571 /* update time to cancel out callback processing overhead */
2572 time_update (EV_A_ 1e100);
2573
2574 /* from now on, we want a pipe-wake-up */
2575 pipe_write_wanted = 1;
2576
1908 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2577 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1909 { 2578 {
1910 /* update time to cancel out callback processing overhead */
1911 time_update (EV_A_ 1e100);
1912
1913 waittime = MAX_BLOCKTIME; 2579 waittime = MAX_BLOCKTIME;
1914 2580
1915 if (timercnt) 2581 if (timercnt)
1916 { 2582 {
1917 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2583 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1918 if (waittime > to) waittime = to; 2584 if (waittime > to) waittime = to;
1919 } 2585 }
1920 2586
1921#if EV_PERIODIC_ENABLE 2587#if EV_PERIODIC_ENABLE
1922 if (periodiccnt) 2588 if (periodiccnt)
1923 { 2589 {
1924 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2590 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1925 if (waittime > to) waittime = to; 2591 if (waittime > to) waittime = to;
1926 } 2592 }
1927#endif 2593#endif
1928 2594
2595 /* don't let timeouts decrease the waittime below timeout_blocktime */
1929 if (expect_false (waittime < timeout_blocktime)) 2596 if (expect_false (waittime < timeout_blocktime))
1930 waittime = timeout_blocktime; 2597 waittime = timeout_blocktime;
1931 2598
1932 sleeptime = waittime - backend_fudge; 2599 /* at this point, we NEED to wait, so we have to ensure */
2600 /* to pass a minimum nonzero value to the backend */
2601 if (expect_false (waittime < backend_mintime))
2602 waittime = backend_mintime;
1933 2603
2604 /* extra check because io_blocktime is commonly 0 */
1934 if (expect_true (sleeptime > io_blocktime)) 2605 if (expect_false (io_blocktime))
1935 sleeptime = io_blocktime;
1936
1937 if (sleeptime)
1938 { 2606 {
2607 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2608
2609 if (sleeptime > waittime - backend_mintime)
2610 sleeptime = waittime - backend_mintime;
2611
2612 if (expect_true (sleeptime > 0.))
2613 {
1939 ev_sleep (sleeptime); 2614 ev_sleep (sleeptime);
1940 waittime -= sleeptime; 2615 waittime -= sleeptime;
2616 }
1941 } 2617 }
1942 } 2618 }
1943 2619
2620#if EV_FEATURE_API
1944 ++loop_count; 2621 ++loop_count;
2622#endif
2623 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1945 backend_poll (EV_A_ waittime); 2624 backend_poll (EV_A_ waittime);
2625 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2626
2627 pipe_write_wanted = 0;
2628
2629 if (pipe_write_skipped)
2630 {
2631 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
2632 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2633 }
2634
1946 2635
1947 /* update ev_rt_now, do magic */ 2636 /* update ev_rt_now, do magic */
1948 time_update (EV_A_ waittime + sleeptime); 2637 time_update (EV_A_ waittime + sleeptime);
1949 } 2638 }
1950 2639
… …
1957#if EV_IDLE_ENABLE 2646#if EV_IDLE_ENABLE
1958 /* queue idle watchers unless other events are pending */ 2647 /* queue idle watchers unless other events are pending */
1959 idle_reify (EV_A); 2648 idle_reify (EV_A);
1960#endif 2649#endif
1961 2650
2651#if EV_CHECK_ENABLE
1962 /* queue check watchers, to be executed first */ 2652 /* queue check watchers, to be executed first */
1963 if (expect_false (checkcnt)) 2653 if (expect_false (checkcnt))
1964 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2654 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2655#endif
1965 2656
1966 call_pending (EV_A); 2657 EV_INVOKE_PENDING;
1967 } 2658 }
1968 while (expect_true ( 2659 while (expect_true (
1969 activecnt 2660 activecnt
1970 && !loop_done 2661 && !loop_done
1971 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 2662 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1972 )); 2663 ));
1973 2664
1974 if (loop_done == EVUNLOOP_ONE) 2665 if (loop_done == EVBREAK_ONE)
1975 loop_done = EVUNLOOP_CANCEL; 2666 loop_done = EVBREAK_CANCEL;
2667
2668#if EV_FEATURE_API
2669 --loop_depth;
2670#endif
1976} 2671}
1977 2672
1978void 2673void
1979ev_unloop (EV_P_ int how) 2674ev_break (EV_P_ int how)
1980{ 2675{
1981 loop_done = how; 2676 loop_done = how;
1982} 2677}
1983 2678
2679void
2680ev_ref (EV_P)
2681{
2682 ++activecnt;
2683}
2684
2685void
2686ev_unref (EV_P)
2687{
2688 --activecnt;
2689}
2690
2691void
2692ev_now_update (EV_P)
2693{
2694 time_update (EV_A_ 1e100);
2695}
2696
2697void
2698ev_suspend (EV_P)
2699{
2700 ev_now_update (EV_A);
2701}
2702
2703void
2704ev_resume (EV_P)
2705{
2706 ev_tstamp mn_prev = mn_now;
2707
2708 ev_now_update (EV_A);
2709 timers_reschedule (EV_A_ mn_now - mn_prev);
2710#if EV_PERIODIC_ENABLE
2711 /* TODO: really do this? */
2712 periodics_reschedule (EV_A);
2713#endif
2714}
2715
1984/*****************************************************************************/ 2716/*****************************************************************************/
2717/* singly-linked list management, used when the expected list length is short */
1985 2718
1986void inline_size 2719inline_size void
1987wlist_add (WL *head, WL elem) 2720wlist_add (WL *head, WL elem)
1988{ 2721{
1989 elem->next = *head; 2722 elem->next = *head;
1990 *head = elem; 2723 *head = elem;
1991} 2724}
1992 2725
1993void inline_size 2726inline_size void
1994wlist_del (WL *head, WL elem) 2727wlist_del (WL *head, WL elem)
1995{ 2728{
1996 while (*head) 2729 while (*head)
1997 { 2730 {
1998 if (*head == elem) 2731 if (expect_true (*head == elem))
1999 { 2732 {
2000 *head = elem->next; 2733 *head = elem->next;
2001 return; 2734 break;
2002 } 2735 }
2003 2736
2004 head = &(*head)->next; 2737 head = &(*head)->next;
2005 } 2738 }
2006} 2739}
2007 2740
2008void inline_speed 2741/* internal, faster, version of ev_clear_pending */
2742inline_speed void
2009clear_pending (EV_P_ W w) 2743clear_pending (EV_P_ W w)
2010{ 2744{
2011 if (w->pending) 2745 if (w->pending)
2012 { 2746 {
2013 pendings [ABSPRI (w)][w->pending - 1].w = 0; 2747 pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2014 w->pending = 0; 2748 w->pending = 0;
2015 } 2749 }
2016} 2750}
2017 2751
2018int 2752int
… …
2022 int pending = w_->pending; 2756 int pending = w_->pending;
2023 2757
2024 if (expect_true (pending)) 2758 if (expect_true (pending))
2025 { 2759 {
2026 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; 2760 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2761 p->w = (W)&pending_w;
2027 w_->pending = 0; 2762 w_->pending = 0;
2028 p->w = 0;
2029 return p->events; 2763 return p->events;
2030 } 2764 }
2031 else 2765 else
2032 return 0; 2766 return 0;
2033} 2767}
2034 2768
2035void inline_size 2769inline_size void
2036pri_adjust (EV_P_ W w) 2770pri_adjust (EV_P_ W w)
2037{ 2771{
2038 int pri = w->priority; 2772 int pri = ev_priority (w);
2039 pri = pri < EV_MINPRI ? EV_MINPRI : pri; 2773 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2040 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; 2774 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2041 w->priority = pri; 2775 ev_set_priority (w, pri);
2042} 2776}
2043 2777
2044void inline_speed 2778inline_speed void
2045ev_start (EV_P_ W w, int active) 2779ev_start (EV_P_ W w, int active)
2046{ 2780{
2047 pri_adjust (EV_A_ w); 2781 pri_adjust (EV_A_ w);
2048 w->active = active; 2782 w->active = active;
2049 ev_ref (EV_A); 2783 ev_ref (EV_A);
2050} 2784}
2051 2785
2052void inline_size 2786inline_size void
2053ev_stop (EV_P_ W w) 2787ev_stop (EV_P_ W w)
2054{ 2788{
2055 ev_unref (EV_A); 2789 ev_unref (EV_A);
2056 w->active = 0; 2790 w->active = 0;
2057} 2791}
… …
2064 int fd = w->fd; 2798 int fd = w->fd;
2065 2799
2066 if (expect_false (ev_is_active (w))) 2800 if (expect_false (ev_is_active (w)))
2067 return; 2801 return;
2068 2802
2069 assert (("ev_io_start called with negative fd", fd >= 0)); 2803 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2804 assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2070 2805
2071 EV_FREQUENT_CHECK; 2806 EV_FREQUENT_CHECK;
2072 2807
2073 ev_start (EV_A_ (W)w, 1); 2808 ev_start (EV_A_ (W)w, 1);
2074 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2809 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2075 wlist_add (&anfds[fd].head, (WL)w); 2810 wlist_add (&anfds[fd].head, (WL)w);
2076 2811
2077 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2812 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2078 w->events &= ~EV_IOFDSET; 2813 w->events &= ~EV__IOFDSET;
2079 2814
2080 EV_FREQUENT_CHECK; 2815 EV_FREQUENT_CHECK;
2081} 2816}
2082 2817
2083void noinline 2818void noinline
… …
2085{ 2820{
2086 clear_pending (EV_A_ (W)w); 2821 clear_pending (EV_A_ (W)w);
2087 if (expect_false (!ev_is_active (w))) 2822 if (expect_false (!ev_is_active (w)))
2088 return; 2823 return;
2089 2824
2090 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2825 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2091 2826
2092 EV_FREQUENT_CHECK; 2827 EV_FREQUENT_CHECK;
2093 2828
2094 wlist_del (&anfds[w->fd].head, (WL)w); 2829 wlist_del (&anfds[w->fd].head, (WL)w);
2095 ev_stop (EV_A_ (W)w); 2830 ev_stop (EV_A_ (W)w);
2096 2831
2097 fd_change (EV_A_ w->fd, 1); 2832 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2098 2833
2099 EV_FREQUENT_CHECK; 2834 EV_FREQUENT_CHECK;
2100} 2835}
2101 2836
2102void noinline 2837void noinline
… …
2105 if (expect_false (ev_is_active (w))) 2840 if (expect_false (ev_is_active (w)))
2106 return; 2841 return;
2107 2842
2108 ev_at (w) += mn_now; 2843 ev_at (w) += mn_now;
2109 2844
2110 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2845 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2111 2846
2112 EV_FREQUENT_CHECK; 2847 EV_FREQUENT_CHECK;
2113 2848
2114 ++timercnt; 2849 ++timercnt;
2115 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); 2850 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
… …
2118 ANHE_at_cache (timers [ev_active (w)]); 2853 ANHE_at_cache (timers [ev_active (w)]);
2119 upheap (timers, ev_active (w)); 2854 upheap (timers, ev_active (w));
2120 2855
2121 EV_FREQUENT_CHECK; 2856 EV_FREQUENT_CHECK;
2122 2857
2123 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2858 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2124} 2859}
2125 2860
2126void noinline 2861void noinline
2127ev_timer_stop (EV_P_ ev_timer *w) 2862ev_timer_stop (EV_P_ ev_timer *w)
2128{ 2863{
… …
2133 EV_FREQUENT_CHECK; 2868 EV_FREQUENT_CHECK;
2134 2869
2135 { 2870 {
2136 int active = ev_active (w); 2871 int active = ev_active (w);
2137 2872
2138 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2873 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2139 2874
2140 --timercnt; 2875 --timercnt;
2141 2876
2142 if (expect_true (active < timercnt + HEAP0)) 2877 if (expect_true (active < timercnt + HEAP0))
2143 { 2878 {
2144 timers [active] = timers [timercnt + HEAP0]; 2879 timers [active] = timers [timercnt + HEAP0];
2145 adjustheap (timers, timercnt, active); 2880 adjustheap (timers, timercnt, active);
2146 } 2881 }
2147 } 2882 }
2148 2883
2149 EV_FREQUENT_CHECK;
2150
2151 ev_at (w) -= mn_now; 2884 ev_at (w) -= mn_now;
2152 2885
2153 ev_stop (EV_A_ (W)w); 2886 ev_stop (EV_A_ (W)w);
2887
2888 EV_FREQUENT_CHECK;
2154} 2889}
2155 2890
2156void noinline 2891void noinline
2157ev_timer_again (EV_P_ ev_timer *w) 2892ev_timer_again (EV_P_ ev_timer *w)
2158{ 2893{
… …
2176 } 2911 }
2177 2912
2178 EV_FREQUENT_CHECK; 2913 EV_FREQUENT_CHECK;
2179} 2914}
2180 2915
2916ev_tstamp
2917ev_timer_remaining (EV_P_ ev_timer *w)
2918{
2919 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2920}
2921
2181#if EV_PERIODIC_ENABLE 2922#if EV_PERIODIC_ENABLE
2182void noinline 2923void noinline
2183ev_periodic_start (EV_P_ ev_periodic *w) 2924ev_periodic_start (EV_P_ ev_periodic *w)
2184{ 2925{
2185 if (expect_false (ev_is_active (w))) 2926 if (expect_false (ev_is_active (w)))
… …
2187 2928
2188 if (w->reschedule_cb) 2929 if (w->reschedule_cb)
2189 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2930 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2190 else if (w->interval) 2931 else if (w->interval)
2191 { 2932 {
2192 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2933 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2193 /* this formula differs from the one in periodic_reify because we do not always round up */ 2934 periodic_recalc (EV_A_ w);
2194 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2195 } 2935 }
2196 else 2936 else
2197 ev_at (w) = w->offset; 2937 ev_at (w) = w->offset;
2198 2938
2199 EV_FREQUENT_CHECK; 2939 EV_FREQUENT_CHECK;
… …
2205 ANHE_at_cache (periodics [ev_active (w)]); 2945 ANHE_at_cache (periodics [ev_active (w)]);
2206 upheap (periodics, ev_active (w)); 2946 upheap (periodics, ev_active (w));
2207 2947
2208 EV_FREQUENT_CHECK; 2948 EV_FREQUENT_CHECK;
2209 2949
2210 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2950 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2211} 2951}
2212 2952
2213void noinline 2953void noinline
2214ev_periodic_stop (EV_P_ ev_periodic *w) 2954ev_periodic_stop (EV_P_ ev_periodic *w)
2215{ 2955{
… …
2220 EV_FREQUENT_CHECK; 2960 EV_FREQUENT_CHECK;
2221 2961
2222 { 2962 {
2223 int active = ev_active (w); 2963 int active = ev_active (w);
2224 2964
2225 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2965 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2226 2966
2227 --periodiccnt; 2967 --periodiccnt;
2228 2968
2229 if (expect_true (active < periodiccnt + HEAP0)) 2969 if (expect_true (active < periodiccnt + HEAP0))
2230 { 2970 {
2231 periodics [active] = periodics [periodiccnt + HEAP0]; 2971 periodics [active] = periodics [periodiccnt + HEAP0];
2232 adjustheap (periodics, periodiccnt, active); 2972 adjustheap (periodics, periodiccnt, active);
2233 } 2973 }
2234 } 2974 }
2235 2975
2236 EV_FREQUENT_CHECK;
2237
2238 ev_stop (EV_A_ (W)w); 2976 ev_stop (EV_A_ (W)w);
2977
2978 EV_FREQUENT_CHECK;
2239} 2979}
2240 2980
2241void noinline 2981void noinline
2242ev_periodic_again (EV_P_ ev_periodic *w) 2982ev_periodic_again (EV_P_ ev_periodic *w)
2243{ 2983{
… …
2249 2989
2250#ifndef SA_RESTART 2990#ifndef SA_RESTART
2251# define SA_RESTART 0 2991# define SA_RESTART 0
2252#endif 2992#endif
2253 2993
2994#if EV_SIGNAL_ENABLE
2995
2254void noinline 2996void noinline
2255ev_signal_start (EV_P_ ev_signal *w) 2997ev_signal_start (EV_P_ ev_signal *w)
2256{ 2998{
2257#if EV_MULTIPLICITY
2258 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2259#endif
2260 if (expect_false (ev_is_active (w))) 2999 if (expect_false (ev_is_active (w)))
2261 return; 3000 return;
2262 3001
2263 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 3002 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2264 3003
2265 evpipe_init (EV_A); 3004#if EV_MULTIPLICITY
3005 assert (("libev: a signal must not be attached to two different loops",
3006 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2266 3007
2267 EV_FREQUENT_CHECK; 3008 signals [w->signum - 1].loop = EV_A;
3009#endif
2268 3010
3011 EV_FREQUENT_CHECK;
3012
3013#if EV_USE_SIGNALFD
3014 if (sigfd == -2)
2269 { 3015 {
2270#ifndef _WIN32 3016 sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2271 sigset_t full, prev; 3017 if (sigfd < 0 && errno == EINVAL)
2272 sigfillset (&full); 3018 sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2273 sigprocmask (SIG_SETMASK, &full, &prev);
2274#endif
2275 3019
2276 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 3020 if (sigfd >= 0)
3021 {
3022 fd_intern (sigfd); /* doing it twice will not hurt */
2277 3023
2278#ifndef _WIN32 3024 sigemptyset (&sigfd_set);
2279 sigprocmask (SIG_SETMASK, &prev, 0); 3025
2280#endif 3026 ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
3027 ev_set_priority (&sigfd_w, EV_MAXPRI);
3028 ev_io_start (EV_A_ &sigfd_w);
3029 ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
3030 }
2281 } 3031 }
3032
3033 if (sigfd >= 0)
3034 {
3035 /* TODO: check .head */
3036 sigaddset (&sigfd_set, w->signum);
3037 sigprocmask (SIG_BLOCK, &sigfd_set, 0);
3038
3039 signalfd (sigfd, &sigfd_set, 0);
3040 }
3041#endif
2282 3042
2283 ev_start (EV_A_ (W)w, 1); 3043 ev_start (EV_A_ (W)w, 1);
2284 wlist_add (&signals [w->signum - 1].head, (WL)w); 3044 wlist_add (&signals [w->signum - 1].head, (WL)w);
2285 3045
2286 if (!((WL)w)->next) 3046 if (!((WL)w)->next)
3047# if EV_USE_SIGNALFD
3048 if (sigfd < 0) /*TODO*/
3049# endif
2287 { 3050 {
2288#if _WIN32 3051# ifdef _WIN32
3052 evpipe_init (EV_A);
3053
2289 signal (w->signum, ev_sighandler); 3054 signal (w->signum, ev_sighandler);
2290#else 3055# else
2291 struct sigaction sa; 3056 struct sigaction sa;
3057
3058 evpipe_init (EV_A);
3059
2292 sa.sa_handler = ev_sighandler; 3060 sa.sa_handler = ev_sighandler;
2293 sigfillset (&sa.sa_mask); 3061 sigfillset (&sa.sa_mask);
2294 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3062 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2295 sigaction (w->signum, &sa, 0); 3063 sigaction (w->signum, &sa, 0);
3064
3065 if (origflags & EVFLAG_NOSIGMASK)
3066 {
3067 sigemptyset (&sa.sa_mask);
3068 sigaddset (&sa.sa_mask, w->signum);
3069 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3070 }
2296#endif 3071#endif
2297 } 3072 }
2298 3073
2299 EV_FREQUENT_CHECK; 3074 EV_FREQUENT_CHECK;
2300} 3075}
2301 3076
2302void noinline 3077void noinline
… …
2310 3085
2311 wlist_del (&signals [w->signum - 1].head, (WL)w); 3086 wlist_del (&signals [w->signum - 1].head, (WL)w);
2312 ev_stop (EV_A_ (W)w); 3087 ev_stop (EV_A_ (W)w);
2313 3088
2314 if (!signals [w->signum - 1].head) 3089 if (!signals [w->signum - 1].head)
3090 {
3091#if EV_MULTIPLICITY
3092 signals [w->signum - 1].loop = 0; /* unattach from signal */
3093#endif
3094#if EV_USE_SIGNALFD
3095 if (sigfd >= 0)
3096 {
3097 sigset_t ss;
3098
3099 sigemptyset (&ss);
3100 sigaddset (&ss, w->signum);
3101 sigdelset (&sigfd_set, w->signum);
3102
3103 signalfd (sigfd, &sigfd_set, 0);
3104 sigprocmask (SIG_UNBLOCK, &ss, 0);
3105 }
3106 else
3107#endif
2315 signal (w->signum, SIG_DFL); 3108 signal (w->signum, SIG_DFL);
3109 }
2316 3110
2317 EV_FREQUENT_CHECK; 3111 EV_FREQUENT_CHECK;
2318} 3112}
3113
3114#endif
3115
3116#if EV_CHILD_ENABLE
2319 3117
2320void 3118void
2321ev_child_start (EV_P_ ev_child *w) 3119ev_child_start (EV_P_ ev_child *w)
2322{ 3120{
2323#if EV_MULTIPLICITY 3121#if EV_MULTIPLICITY
2324 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3122 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2325#endif 3123#endif
2326 if (expect_false (ev_is_active (w))) 3124 if (expect_false (ev_is_active (w)))
2327 return; 3125 return;
2328 3126
2329 EV_FREQUENT_CHECK; 3127 EV_FREQUENT_CHECK;
2330 3128
2331 ev_start (EV_A_ (W)w, 1); 3129 ev_start (EV_A_ (W)w, 1);
2332 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3130 wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2333 3131
2334 EV_FREQUENT_CHECK; 3132 EV_FREQUENT_CHECK;
2335} 3133}
2336 3134
2337void 3135void
… …
2341 if (expect_false (!ev_is_active (w))) 3139 if (expect_false (!ev_is_active (w)))
2342 return; 3140 return;
2343 3141
2344 EV_FREQUENT_CHECK; 3142 EV_FREQUENT_CHECK;
2345 3143
2346 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 3144 wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2347 ev_stop (EV_A_ (W)w); 3145 ev_stop (EV_A_ (W)w);
2348 3146
2349 EV_FREQUENT_CHECK; 3147 EV_FREQUENT_CHECK;
2350} 3148}
3149
3150#endif
2351 3151
2352#if EV_STAT_ENABLE 3152#if EV_STAT_ENABLE
2353 3153
2354# ifdef _WIN32 3154# ifdef _WIN32
2355# undef lstat 3155# undef lstat
2356# define lstat(a,b) _stati64 (a,b) 3156# define lstat(a,b) _stati64 (a,b)
2357# endif 3157# endif
2358 3158
2359#define DEF_STAT_INTERVAL 5.0074891 3159#define DEF_STAT_INTERVAL 5.0074891
3160#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2360#define MIN_STAT_INTERVAL 0.1074891 3161#define MIN_STAT_INTERVAL 0.1074891
2361 3162
2362static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 3163static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2363 3164
2364#if EV_USE_INOTIFY 3165#if EV_USE_INOTIFY
2365# define EV_INOTIFY_BUFSIZE 8192 3166
3167/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3168# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2366 3169
2367static void noinline 3170static void noinline
2368infy_add (EV_P_ ev_stat *w) 3171infy_add (EV_P_ ev_stat *w)
2369{ 3172{
2370 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 3173 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2371 3174
2372 if (w->wd < 0) 3175 if (w->wd >= 0)
3176 {
3177 struct statfs sfs;
3178
3179 /* now local changes will be tracked by inotify, but remote changes won't */
3180 /* unless the filesystem is known to be local, we therefore still poll */
3181 /* also do poll on <2.6.25, but with normal frequency */
3182
3183 if (!fs_2625)
3184 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3185 else if (!statfs (w->path, &sfs)
3186 && (sfs.f_type == 0x1373 /* devfs */
3187 || sfs.f_type == 0xEF53 /* ext2/3 */
3188 || sfs.f_type == 0x3153464a /* jfs */
3189 || sfs.f_type == 0x52654973 /* reiser3 */
3190 || sfs.f_type == 0x01021994 /* tempfs */
3191 || sfs.f_type == 0x58465342 /* xfs */))
3192 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3193 else
3194 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2373 { 3195 }
2374 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 3196 else
3197 {
3198 /* can't use inotify, continue to stat */
3199 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2375 3200
2376 /* monitor some parent directory for speedup hints */ 3201 /* if path is not there, monitor some parent directory for speedup hints */
2377 /* note that exceeding the hardcoded limit is not a correctness issue, */ 3202 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2378 /* but an efficiency issue only */ 3203 /* but an efficiency issue only */
2379 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 3204 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2380 { 3205 {
2381 char path [4096]; 3206 char path [4096];
2382 strcpy (path, w->path); 3207 strcpy (path, w->path);
… …
2386 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 3211 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2387 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 3212 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2388 3213
2389 char *pend = strrchr (path, '/'); 3214 char *pend = strrchr (path, '/');
2390 3215
2391 if (!pend) 3216 if (!pend || pend == path)
2392 break; /* whoops, no '/', complain to your admin */ 3217 break;
2393 3218
2394 *pend = 0; 3219 *pend = 0;
2395 w->wd = inotify_add_watch (fs_fd, path, mask); 3220 w->wd = inotify_add_watch (fs_fd, path, mask);
2396 } 3221 }
2397 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3222 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2398 } 3223 }
2399 } 3224 }
2400 else
2401 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2402 3225
2403 if (w->wd >= 0) 3226 if (w->wd >= 0)
2404 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 3227 wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
3228
3229 /* now re-arm timer, if required */
3230 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3231 ev_timer_again (EV_A_ &w->timer);
3232 if (ev_is_active (&w->timer)) ev_unref (EV_A);
2405} 3233}
2406 3234
2407static void noinline 3235static void noinline
2408infy_del (EV_P_ ev_stat *w) 3236infy_del (EV_P_ ev_stat *w)
2409{ 3237{
… …
2412 3240
2413 if (wd < 0) 3241 if (wd < 0)
2414 return; 3242 return;
2415 3243
2416 w->wd = -2; 3244 w->wd = -2;
2417 slot = wd & (EV_INOTIFY_HASHSIZE - 1); 3245 slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2418 wlist_del (&fs_hash [slot].head, (WL)w); 3246 wlist_del (&fs_hash [slot].head, (WL)w);
2419 3247
2420 /* remove this watcher, if others are watching it, they will rearm */ 3248 /* remove this watcher, if others are watching it, they will rearm */
2421 inotify_rm_watch (fs_fd, wd); 3249 inotify_rm_watch (fs_fd, wd);
2422} 3250}
2423 3251
2424static void noinline 3252static void noinline
2425infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 3253infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2426{ 3254{
2427 if (slot < 0) 3255 if (slot < 0)
2428 /* overflow, need to check for all hahs slots */ 3256 /* overflow, need to check for all hash slots */
2429 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3257 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2430 infy_wd (EV_A_ slot, wd, ev); 3258 infy_wd (EV_A_ slot, wd, ev);
2431 else 3259 else
2432 { 3260 {
2433 WL w_; 3261 WL w_;
2434 3262
2435 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) 3263 for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2436 { 3264 {
2437 ev_stat *w = (ev_stat *)w_; 3265 ev_stat *w = (ev_stat *)w_;
2438 w_ = w_->next; /* lets us remove this watcher and all before it */ 3266 w_ = w_->next; /* lets us remove this watcher and all before it */
2439 3267
2440 if (w->wd == wd || wd == -1) 3268 if (w->wd == wd || wd == -1)
2441 { 3269 {
2442 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 3270 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2443 { 3271 {
3272 wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2444 w->wd = -1; 3273 w->wd = -1;
2445 infy_add (EV_A_ w); /* re-add, no matter what */ 3274 infy_add (EV_A_ w); /* re-add, no matter what */
2446 } 3275 }
2447 3276
2448 stat_timer_cb (EV_A_ &w->timer, 0); 3277 stat_timer_cb (EV_A_ &w->timer, 0);
… …
2453 3282
2454static void 3283static void
2455infy_cb (EV_P_ ev_io *w, int revents) 3284infy_cb (EV_P_ ev_io *w, int revents)
2456{ 3285{
2457 char buf [EV_INOTIFY_BUFSIZE]; 3286 char buf [EV_INOTIFY_BUFSIZE];
2458 struct inotify_event *ev = (struct inotify_event *)buf;
2459 int ofs; 3287 int ofs;
2460 int len = read (fs_fd, buf, sizeof (buf)); 3288 int len = read (fs_fd, buf, sizeof (buf));
2461 3289
2462 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 3290 for (ofs = 0; ofs < len; )
3291 {
3292 struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2463 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3293 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3294 ofs += sizeof (struct inotify_event) + ev->len;
3295 }
2464} 3296}
2465 3297
2466void inline_size 3298inline_size void ecb_cold
3299ev_check_2625 (EV_P)
3300{
3301 /* kernels < 2.6.25 are borked
3302 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3303 */
3304 if (ev_linux_version () < 0x020619)
3305 return;
3306
3307 fs_2625 = 1;
3308}
3309
3310inline_size int
3311infy_newfd (void)
3312{
3313#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
3314 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3315 if (fd >= 0)
3316 return fd;
3317#endif
3318 return inotify_init ();
3319}
3320
3321inline_size void
2467infy_init (EV_P) 3322infy_init (EV_P)
2468{ 3323{
2469 if (fs_fd != -2) 3324 if (fs_fd != -2)
2470 return; 3325 return;
2471 3326
3327 fs_fd = -1;
3328
3329 ev_check_2625 (EV_A);
3330
2472 fs_fd = inotify_init (); 3331 fs_fd = infy_newfd ();
2473 3332
2474 if (fs_fd >= 0) 3333 if (fs_fd >= 0)
2475 { 3334 {
3335 fd_intern (fs_fd);
2476 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); 3336 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2477 ev_set_priority (&fs_w, EV_MAXPRI); 3337 ev_set_priority (&fs_w, EV_MAXPRI);
2478 ev_io_start (EV_A_ &fs_w); 3338 ev_io_start (EV_A_ &fs_w);
3339 ev_unref (EV_A);
2479 } 3340 }
2480} 3341}
2481 3342
2482void inline_size 3343inline_size void
2483infy_fork (EV_P) 3344infy_fork (EV_P)
2484{ 3345{
2485 int slot; 3346 int slot;
2486 3347
2487 if (fs_fd < 0) 3348 if (fs_fd < 0)
2488 return; 3349 return;
2489 3350
3351 ev_ref (EV_A);
3352 ev_io_stop (EV_A_ &fs_w);
2490 close (fs_fd); 3353 close (fs_fd);
2491 fs_fd = inotify_init (); 3354 fs_fd = infy_newfd ();
2492 3355
3356 if (fs_fd >= 0)
3357 {
3358 fd_intern (fs_fd);
3359 ev_io_set (&fs_w, fs_fd, EV_READ);
3360 ev_io_start (EV_A_ &fs_w);
3361 ev_unref (EV_A);
3362 }
3363
2493 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 3364 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2494 { 3365 {
2495 WL w_ = fs_hash [slot].head; 3366 WL w_ = fs_hash [slot].head;
2496 fs_hash [slot].head = 0; 3367 fs_hash [slot].head = 0;
2497 3368
2498 while (w_) 3369 while (w_)
… …
2503 w->wd = -1; 3374 w->wd = -1;
2504 3375
2505 if (fs_fd >= 0) 3376 if (fs_fd >= 0)
2506 infy_add (EV_A_ w); /* re-add, no matter what */ 3377 infy_add (EV_A_ w); /* re-add, no matter what */
2507 else 3378 else
3379 {
3380 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3381 if (ev_is_active (&w->timer)) ev_ref (EV_A);
2508 ev_timer_start (EV_A_ &w->timer); 3382 ev_timer_again (EV_A_ &w->timer);
3383 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3384 }
2509 } 3385 }
2510
2511 } 3386 }
2512} 3387}
2513 3388
3389#endif
3390
3391#ifdef _WIN32
3392# define EV_LSTAT(p,b) _stati64 (p, b)
3393#else
3394# define EV_LSTAT(p,b) lstat (p, b)
2514#endif 3395#endif
2515 3396
2516void 3397void
2517ev_stat_stat (EV_P_ ev_stat *w) 3398ev_stat_stat (EV_P_ ev_stat *w)
2518{ 3399{
… …
2525static void noinline 3406static void noinline
2526stat_timer_cb (EV_P_ ev_timer *w_, int revents) 3407stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2527{ 3408{
2528 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 3409 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2529 3410
2530 /* we copy this here each the time so that */ 3411 ev_statdata prev = w->attr;
2531 /* prev has the old value when the callback gets invoked */
2532 w->prev = w->attr;
2533 ev_stat_stat (EV_A_ w); 3412 ev_stat_stat (EV_A_ w);
2534 3413
2535 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ 3414 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2536 if ( 3415 if (
2537 w->prev.st_dev != w->attr.st_dev 3416 prev.st_dev != w->attr.st_dev
2538 || w->prev.st_ino != w->attr.st_ino 3417 || prev.st_ino != w->attr.st_ino
2539 || w->prev.st_mode != w->attr.st_mode 3418 || prev.st_mode != w->attr.st_mode
2540 || w->prev.st_nlink != w->attr.st_nlink 3419 || prev.st_nlink != w->attr.st_nlink
2541 || w->prev.st_uid != w->attr.st_uid 3420 || prev.st_uid != w->attr.st_uid
2542 || w->prev.st_gid != w->attr.st_gid 3421 || prev.st_gid != w->attr.st_gid
2543 || w->prev.st_rdev != w->attr.st_rdev 3422 || prev.st_rdev != w->attr.st_rdev
2544 || w->prev.st_size != w->attr.st_size 3423 || prev.st_size != w->attr.st_size
2545 || w->prev.st_atime != w->attr.st_atime 3424 || prev.st_atime != w->attr.st_atime
2546 || w->prev.st_mtime != w->attr.st_mtime 3425 || prev.st_mtime != w->attr.st_mtime
2547 || w->prev.st_ctime != w->attr.st_ctime 3426 || prev.st_ctime != w->attr.st_ctime
2548 ) { 3427 ) {
3428 /* we only update w->prev on actual differences */
3429 /* in case we test more often than invoke the callback, */
3430 /* to ensure that prev is always different to attr */
3431 w->prev = prev;
3432
2549 #if EV_USE_INOTIFY 3433 #if EV_USE_INOTIFY
3434 if (fs_fd >= 0)
3435 {
2550 infy_del (EV_A_ w); 3436 infy_del (EV_A_ w);
2551 infy_add (EV_A_ w); 3437 infy_add (EV_A_ w);
2552 ev_stat_stat (EV_A_ w); /* avoid race... */ 3438 ev_stat_stat (EV_A_ w); /* avoid race... */
3439 }
2553 #endif 3440 #endif
2554 3441
2555 ev_feed_event (EV_A_ w, EV_STAT); 3442 ev_feed_event (EV_A_ w, EV_STAT);
2556 } 3443 }
2557} 3444}
… …
2560ev_stat_start (EV_P_ ev_stat *w) 3447ev_stat_start (EV_P_ ev_stat *w)
2561{ 3448{
2562 if (expect_false (ev_is_active (w))) 3449 if (expect_false (ev_is_active (w)))
2563 return; 3450 return;
2564 3451
2565 /* since we use memcmp, we need to clear any padding data etc. */
2566 memset (&w->prev, 0, sizeof (ev_statdata));
2567 memset (&w->attr, 0, sizeof (ev_statdata));
2568
2569 ev_stat_stat (EV_A_ w); 3452 ev_stat_stat (EV_A_ w);
2570 3453
3454 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2571 if (w->interval < MIN_STAT_INTERVAL) 3455 w->interval = MIN_STAT_INTERVAL;
2572 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2573 3456
2574 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 3457 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2575 ev_set_priority (&w->timer, ev_priority (w)); 3458 ev_set_priority (&w->timer, ev_priority (w));
2576 3459
2577#if EV_USE_INOTIFY 3460#if EV_USE_INOTIFY
2578 infy_init (EV_A); 3461 infy_init (EV_A);
2579 3462
2580 if (fs_fd >= 0) 3463 if (fs_fd >= 0)
2581 infy_add (EV_A_ w); 3464 infy_add (EV_A_ w);
2582 else 3465 else
2583#endif 3466#endif
3467 {
2584 ev_timer_start (EV_A_ &w->timer); 3468 ev_timer_again (EV_A_ &w->timer);
3469 ev_unref (EV_A);
3470 }
2585 3471
2586 ev_start (EV_A_ (W)w, 1); 3472 ev_start (EV_A_ (W)w, 1);
2587 3473
2588 EV_FREQUENT_CHECK; 3474 EV_FREQUENT_CHECK;
2589} 3475}
… …
2598 EV_FREQUENT_CHECK; 3484 EV_FREQUENT_CHECK;
2599 3485
2600#if EV_USE_INOTIFY 3486#if EV_USE_INOTIFY
2601 infy_del (EV_A_ w); 3487 infy_del (EV_A_ w);
2602#endif 3488#endif
3489
3490 if (ev_is_active (&w->timer))
3491 {
3492 ev_ref (EV_A);
2603 ev_timer_stop (EV_A_ &w->timer); 3493 ev_timer_stop (EV_A_ &w->timer);
3494 }
2604 3495
2605 ev_stop (EV_A_ (W)w); 3496 ev_stop (EV_A_ (W)w);
2606 3497
2607 EV_FREQUENT_CHECK; 3498 EV_FREQUENT_CHECK;
2608} 3499}
… …
2653 3544
2654 EV_FREQUENT_CHECK; 3545 EV_FREQUENT_CHECK;
2655} 3546}
2656#endif 3547#endif
2657 3548
3549#if EV_PREPARE_ENABLE
2658void 3550void
2659ev_prepare_start (EV_P_ ev_prepare *w) 3551ev_prepare_start (EV_P_ ev_prepare *w)
2660{ 3552{
2661 if (expect_false (ev_is_active (w))) 3553 if (expect_false (ev_is_active (w)))
2662 return; 3554 return;
… …
2688 3580
2689 ev_stop (EV_A_ (W)w); 3581 ev_stop (EV_A_ (W)w);
2690 3582
2691 EV_FREQUENT_CHECK; 3583 EV_FREQUENT_CHECK;
2692} 3584}
3585#endif
2693 3586
3587#if EV_CHECK_ENABLE
2694void 3588void
2695ev_check_start (EV_P_ ev_check *w) 3589ev_check_start (EV_P_ ev_check *w)
2696{ 3590{
2697 if (expect_false (ev_is_active (w))) 3591 if (expect_false (ev_is_active (w)))
2698 return; 3592 return;
… …
2724 3618
2725 ev_stop (EV_A_ (W)w); 3619 ev_stop (EV_A_ (W)w);
2726 3620
2727 EV_FREQUENT_CHECK; 3621 EV_FREQUENT_CHECK;
2728} 3622}
3623#endif
2729 3624
2730#if EV_EMBED_ENABLE 3625#if EV_EMBED_ENABLE
2731void noinline 3626void noinline
2732ev_embed_sweep (EV_P_ ev_embed *w) 3627ev_embed_sweep (EV_P_ ev_embed *w)
2733{ 3628{
2734 ev_loop (w->other, EVLOOP_NONBLOCK); 3629 ev_run (w->other, EVRUN_NOWAIT);
2735} 3630}
2736 3631
2737static void 3632static void
2738embed_io_cb (EV_P_ ev_io *io, int revents) 3633embed_io_cb (EV_P_ ev_io *io, int revents)
2739{ 3634{
2740 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 3635 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2741 3636
2742 if (ev_cb (w)) 3637 if (ev_cb (w))
2743 ev_feed_event (EV_A_ (W)w, EV_EMBED); 3638 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2744 else 3639 else
2745 ev_loop (w->other, EVLOOP_NONBLOCK); 3640 ev_run (w->other, EVRUN_NOWAIT);
2746} 3641}
2747 3642
2748static void 3643static void
2749embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 3644embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2750{ 3645{
2751 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); 3646 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2752 3647
2753 { 3648 {
2754 struct ev_loop *loop = w->other; 3649 EV_P = w->other;
2755 3650
2756 while (fdchangecnt) 3651 while (fdchangecnt)
2757 { 3652 {
2758 fd_reify (EV_A); 3653 fd_reify (EV_A);
2759 ev_loop (EV_A_ EVLOOP_NONBLOCK); 3654 ev_run (EV_A_ EVRUN_NOWAIT);
2760 } 3655 }
2761 } 3656 }
3657}
3658
3659static void
3660embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
3661{
3662 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3663
3664 ev_embed_stop (EV_A_ w);
3665
3666 {
3667 EV_P = w->other;
3668
3669 ev_loop_fork (EV_A);
3670 ev_run (EV_A_ EVRUN_NOWAIT);
3671 }
3672
3673 ev_embed_start (EV_A_ w);
2762} 3674}
2763 3675
2764#if 0 3676#if 0
2765static void 3677static void
2766embed_idle_cb (EV_P_ ev_idle *idle, int revents) 3678embed_idle_cb (EV_P_ ev_idle *idle, int revents)
… …
2774{ 3686{
2775 if (expect_false (ev_is_active (w))) 3687 if (expect_false (ev_is_active (w)))
2776 return; 3688 return;
2777 3689
2778 { 3690 {
2779 struct ev_loop *loop = w->other; 3691 EV_P = w->other;
2780 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 3692 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2781 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 3693 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2782 } 3694 }
2783 3695
2784 EV_FREQUENT_CHECK; 3696 EV_FREQUENT_CHECK;
2785 3697
… …
2788 3700
2789 ev_prepare_init (&w->prepare, embed_prepare_cb); 3701 ev_prepare_init (&w->prepare, embed_prepare_cb);
2790 ev_set_priority (&w->prepare, EV_MINPRI); 3702 ev_set_priority (&w->prepare, EV_MINPRI);
2791 ev_prepare_start (EV_A_ &w->prepare); 3703 ev_prepare_start (EV_A_ &w->prepare);
2792 3704
3705 ev_fork_init (&w->fork, embed_fork_cb);
3706 ev_fork_start (EV_A_ &w->fork);
3707
2793 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 3708 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2794 3709
2795 ev_start (EV_A_ (W)w, 1); 3710 ev_start (EV_A_ (W)w, 1);
2796 3711
2797 EV_FREQUENT_CHECK; 3712 EV_FREQUENT_CHECK;
… …
2804 if (expect_false (!ev_is_active (w))) 3719 if (expect_false (!ev_is_active (w)))
2805 return; 3720 return;
2806 3721
2807 EV_FREQUENT_CHECK; 3722 EV_FREQUENT_CHECK;
2808 3723
2809 ev_io_stop (EV_A_ &w->io); 3724 ev_io_stop (EV_A_ &w->io);
2810 ev_prepare_stop (EV_A_ &w->prepare); 3725 ev_prepare_stop (EV_A_ &w->prepare);
3726 ev_fork_stop (EV_A_ &w->fork);
2811 3727
2812 ev_stop (EV_A_ (W)w); 3728 ev_stop (EV_A_ (W)w);
2813 3729
2814 EV_FREQUENT_CHECK; 3730 EV_FREQUENT_CHECK;
2815} 3731}
… …
2851 3767
2852 EV_FREQUENT_CHECK; 3768 EV_FREQUENT_CHECK;
2853} 3769}
2854#endif 3770#endif
2855 3771
3772#if EV_CLEANUP_ENABLE
3773void
3774ev_cleanup_start (EV_P_ ev_cleanup *w)
3775{
3776 if (expect_false (ev_is_active (w)))
3777 return;
3778
3779 EV_FREQUENT_CHECK;
3780
3781 ev_start (EV_A_ (W)w, ++cleanupcnt);
3782 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
3783 cleanups [cleanupcnt - 1] = w;
3784
3785 /* cleanup watchers should never keep a refcount on the loop */
3786 ev_unref (EV_A);
3787 EV_FREQUENT_CHECK;
3788}
3789
3790void
3791ev_cleanup_stop (EV_P_ ev_cleanup *w)
3792{
3793 clear_pending (EV_A_ (W)w);
3794 if (expect_false (!ev_is_active (w)))
3795 return;
3796
3797 EV_FREQUENT_CHECK;
3798 ev_ref (EV_A);
3799
3800 {
3801 int active = ev_active (w);
3802
3803 cleanups [active - 1] = cleanups [--cleanupcnt];
3804 ev_active (cleanups [active - 1]) = active;
3805 }
3806
3807 ev_stop (EV_A_ (W)w);
3808
3809 EV_FREQUENT_CHECK;
3810}
3811#endif
3812
2856#if EV_ASYNC_ENABLE 3813#if EV_ASYNC_ENABLE
2857void 3814void
2858ev_async_start (EV_P_ ev_async *w) 3815ev_async_start (EV_P_ ev_async *w)
2859{ 3816{
2860 if (expect_false (ev_is_active (w))) 3817 if (expect_false (ev_is_active (w)))
2861 return; 3818 return;
2862 3819
3820 w->sent = 0;
3821
2863 evpipe_init (EV_A); 3822 evpipe_init (EV_A);
2864 3823
2865 EV_FREQUENT_CHECK; 3824 EV_FREQUENT_CHECK;
2866 3825
2867 ev_start (EV_A_ (W)w, ++asynccnt); 3826 ev_start (EV_A_ (W)w, ++asynccnt);
… …
2894 3853
2895void 3854void
2896ev_async_send (EV_P_ ev_async *w) 3855ev_async_send (EV_P_ ev_async *w)
2897{ 3856{
2898 w->sent = 1; 3857 w->sent = 1;
2899 evpipe_write (EV_A_ &gotasync); 3858 evpipe_write (EV_A_ &async_pending);
2900} 3859}
2901#endif 3860#endif
2902 3861
2903/*****************************************************************************/ 3862/*****************************************************************************/
2904 3863
… …
2914once_cb (EV_P_ struct ev_once *once, int revents) 3873once_cb (EV_P_ struct ev_once *once, int revents)
2915{ 3874{
2916 void (*cb)(int revents, void *arg) = once->cb; 3875 void (*cb)(int revents, void *arg) = once->cb;
2917 void *arg = once->arg; 3876 void *arg = once->arg;
2918 3877
2919 ev_io_stop (EV_A_ &once->io); 3878 ev_io_stop (EV_A_ &once->io);
2920 ev_timer_stop (EV_A_ &once->to); 3879 ev_timer_stop (EV_A_ &once->to);
2921 ev_free (once); 3880 ev_free (once);
2922 3881
2923 cb (revents, arg); 3882 cb (revents, arg);
2924} 3883}
2925 3884
2926static void 3885static void
2927once_cb_io (EV_P_ ev_io *w, int revents) 3886once_cb_io (EV_P_ ev_io *w, int revents)
2928{ 3887{
2929 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3888 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3889
3890 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2930} 3891}
2931 3892
2932static void 3893static void
2933once_cb_to (EV_P_ ev_timer *w, int revents) 3894once_cb_to (EV_P_ ev_timer *w, int revents)
2934{ 3895{
2935 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3896 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3897
3898 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2936} 3899}
2937 3900
2938void 3901void
2939ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3902ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2940{ 3903{
2941 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 3904 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2942 3905
2943 if (expect_false (!once)) 3906 if (expect_false (!once))
2944 { 3907 {
2945 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 3908 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2946 return; 3909 return;
2947 } 3910 }
2948 3911
2949 once->cb = cb; 3912 once->cb = cb;
2950 once->arg = arg; 3913 once->arg = arg;
… …
2962 ev_timer_set (&once->to, timeout, 0.); 3925 ev_timer_set (&once->to, timeout, 0.);
2963 ev_timer_start (EV_A_ &once->to); 3926 ev_timer_start (EV_A_ &once->to);
2964 } 3927 }
2965} 3928}
2966 3929
3930/*****************************************************************************/
3931
3932#if EV_WALK_ENABLE
3933void ecb_cold
3934ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3935{
3936 int i, j;
3937 ev_watcher_list *wl, *wn;
3938
3939 if (types & (EV_IO | EV_EMBED))
3940 for (i = 0; i < anfdmax; ++i)
3941 for (wl = anfds [i].head; wl; )
3942 {
3943 wn = wl->next;
3944
3945#if EV_EMBED_ENABLE
3946 if (ev_cb ((ev_io *)wl) == embed_io_cb)
3947 {
3948 if (types & EV_EMBED)
3949 cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
3950 }
3951 else
3952#endif
3953#if EV_USE_INOTIFY
3954 if (ev_cb ((ev_io *)wl) == infy_cb)
3955 ;
3956 else
3957#endif
3958 if ((ev_io *)wl != &pipe_w)
3959 if (types & EV_IO)
3960 cb (EV_A_ EV_IO, wl);
3961
3962 wl = wn;
3963 }
3964
3965 if (types & (EV_TIMER | EV_STAT))
3966 for (i = timercnt + HEAP0; i-- > HEAP0; )
3967#if EV_STAT_ENABLE
3968 /*TODO: timer is not always active*/
3969 if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
3970 {
3971 if (types & EV_STAT)
3972 cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
3973 }
3974 else
3975#endif
3976 if (types & EV_TIMER)
3977 cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
3978
3979#if EV_PERIODIC_ENABLE
3980 if (types & EV_PERIODIC)
3981 for (i = periodiccnt + HEAP0; i-- > HEAP0; )
3982 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3983#endif
3984
3985#if EV_IDLE_ENABLE
3986 if (types & EV_IDLE)
3987 for (j = NUMPRI; i--; )
3988 for (i = idlecnt [j]; i--; )
3989 cb (EV_A_ EV_IDLE, idles [j][i]);
3990#endif
3991
3992#if EV_FORK_ENABLE
3993 if (types & EV_FORK)
3994 for (i = forkcnt; i--; )
3995 if (ev_cb (forks [i]) != embed_fork_cb)
3996 cb (EV_A_ EV_FORK, forks [i]);
3997#endif
3998
3999#if EV_ASYNC_ENABLE
4000 if (types & EV_ASYNC)
4001 for (i = asynccnt; i--; )
4002 cb (EV_A_ EV_ASYNC, asyncs [i]);
4003#endif
4004
4005#if EV_PREPARE_ENABLE
4006 if (types & EV_PREPARE)
4007 for (i = preparecnt; i--; )
4008# if EV_EMBED_ENABLE
4009 if (ev_cb (prepares [i]) != embed_prepare_cb)
4010# endif
4011 cb (EV_A_ EV_PREPARE, prepares [i]);
4012#endif
4013
4014#if EV_CHECK_ENABLE
4015 if (types & EV_CHECK)
4016 for (i = checkcnt; i--; )
4017 cb (EV_A_ EV_CHECK, checks [i]);
4018#endif
4019
4020#if EV_SIGNAL_ENABLE
4021 if (types & EV_SIGNAL)
4022 for (i = 0; i < EV_NSIG - 1; ++i)
4023 for (wl = signals [i].head; wl; )
4024 {
4025 wn = wl->next;
4026 cb (EV_A_ EV_SIGNAL, wl);
4027 wl = wn;
4028 }
4029#endif
4030
4031#if EV_CHILD_ENABLE
4032 if (types & EV_CHILD)
4033 for (i = (EV_PID_HASHSIZE); i--; )
4034 for (wl = childs [i]; wl; )
4035 {
4036 wn = wl->next;
4037 cb (EV_A_ EV_CHILD, wl);
4038 wl = wn;
4039 }
4040#endif
4041/* EV_STAT 0x00001000 /* stat data changed */
4042/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
4043}
4044#endif
4045
2967#if EV_MULTIPLICITY 4046#if EV_MULTIPLICITY
2968 #include "ev_wrap.h" 4047 #include "ev_wrap.h"
2969#endif 4048#endif
2970 4049
2971#ifdef __cplusplus 4050EV_CPP(})
2972}
2973#endif
2974 4051

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